Introduce a checklist for visualizers, overrides etc (#6727)

[Play with it
live](https://app.rerun.io/version/main/index.html?url=https://static.rerun.io/rrd/0.17.0/final_cut_bec173a0e7fc4ad83ceb61228cdb63dc2aa860bd.rrd).

This adds a checklist that tries to cover as much as possible of the
visualizer/overrides/defaults/etc stack with as little maintenance
overhead as possible.

Once we're happy with it, we can derive it for different
views/visualizers if there are specific things we want to check for.

This checks that adding and removing overrides & defaults work as
expected for 2D views (both from the UI and from the SDK), and that they
do the right thing rendering wise (using JPEGs as reference).

tests/python/release_checklist/check_overrides_2d.py

@@ -0,0 +1,160 @@
+from __future__ import annotations
+
+import os
+from argparse import Namespace
+from uuid import uuid4
+
+import rerun as rr
+import rerun.blueprint as rrb
+
+README = """
+# 2D views: Overrides, logged values, defaults, fallbacks
+
+This checks that component and visualizer overrides behave as expected for 2D views.
+
+Specifically that…:
+* …Adding and removing overrides/defaults using the blueprint APIs work.
+* …Adding and removing overrides/defaults using the UI work.
+* …Rendering behaves properly.
+
+---
+
+First things firsts, check that the views in the first column render properly:
+* View **1)** should look like this:
+  - ![View 1](https://static.rerun.io/check_overrides_2d_view_1/5454441272b0abee8dbc8d7a342ecfc4036cbe9b/480w.png)
+* View **2)** should look like this:
+  - ![View 2](https://static.rerun.io/check_overrides_2d_view_2/2d6f9d0cba38b3697114c4108d5d99fc5b0fd174/480w.png)
+* View **3)** should look like this:
+  - NOTE: The color might differ if you're running on the web. That's fine.
+  - ![View 3](https://static.rerun.io/check_overrides_2d_view_3/b1409c2862103a5bddce2233995aabb1307f3964/480w.png)
+
+---
+
+Then we'll modify view **1)**. The goal is to make it look exactly like the view on the top right:
+* Double-click any of the arrows to select the arrow batch.
+* Remove the extra `Points2D` visualizer.
+* Remove all extra component overrides on the remaining `Arrows2D` visualizer.
+* You should end up with the exact same view as the one on the right of view **1)**, which itself should look exactly like view **2)**.
+
+---
+
+Then we'll modify view **2)**. The goal is to make it look exactly like the view on the middle right:
+* Double-click any of the arrows to select the arrow batch.
+* Remove all extra component defaults on the `Arrows2D` visualizer.
+* You should end up with the exact same view as the one on the right of view **2)**, which itself should look exactly like view **3)**.
+
+---
+
+Finally, we'll modify view **3)**. The goal is to make it look exactly like the view on the bottom right:
+* Double-click any of the arrows to select the arrow batch.
+* Add overrides to the view until you end up with the exact same view as the one on the right of view **3)**.
+* The resulting view should look like this:
+  - ![View final](https://static.rerun.io/check_overrides_2d_view_final/b65b95157891b35d3a333ebcf3286f2dceef228f/480w.png)
+
+---
+
+👏👏👏
+"""
+
+
+def log_readme() -> None:
+    rr.log("readme", rr.TextDocument(README, media_type=rr.MediaType.MARKDOWN), static=True)
+
+
+def log_boxes() -> None:
+    rr.log(
+        "arrows",
+        rr.Arrows2D(origins=[[-2.0, 0.0], [0.0, 0.0], [2.0, 0.0]], vectors=[[-2.0, 1.0], [0.0, 2.0], [2.0, 1.0]]),
+    )
+
+    visual_bounds = rrb.VisualBounds2D(x_range=[-5.5, 5.5], y_range=[-3.0, 3.0])
+    overrides = {
+        "arrows": [
+            rrb.VisualizerOverrides([
+                rrb.visualizers.Arrows2D,
+                rrb.visualizers.Points2D,
+            ]),
+            rr.components.ColorBatch([[255, 0, 0], [0, 255, 0], [0, 0, 255]]),
+            rr.components.RadiusBatch([0.5, 0.25, 0.125]),
+            rr.components.TextBatch(["BigRed", "MidGreen", "SmolBlue"]),
+            rr.components.Position2DBatch([[-2.0, 1.5], [0.0, -0.5], [2.0, 0.75]]),
+            rr.components.Vector2DBatch([[-2.0, 1.0], [0.0, 2.0], [2.0, 1.0]]),
+        ]
+    }
+    defaults = [
+        rr.components.ColorBatch([[255, 255, 0], [0, 255, 255], [255, 0, 255]]),
+        rr.components.RadiusBatch([0.1, 0.2, 0.3]),
+        rr.components.TextBatch(["TeenyYellow", "AverageCyan", "GigaPurple"]),
+    ]
+
+    rr.send_blueprint(
+        rrb.Blueprint(
+            rrb.Grid(
+                rrb.TextDocumentView(origin="readme", name="Instructions"),
+                rrb.Vertical(
+                    rrb.Spatial2DView(
+                        name="1) Overrides, logged values & defaults",
+                        visual_bounds=visual_bounds,
+                        overrides=overrides,
+                        defaults=defaults,
+                    ),
+                    rrb.Spatial2DView(
+                        name="2) Logged values & defaults",
+                        visual_bounds=visual_bounds,
+                        defaults=defaults,
+                    ),
+                    rrb.Spatial2DView(
+                        name="3) Logged values only",
+                        visual_bounds=visual_bounds,
+                    ),
+                ),
+                rrb.Vertical(
+                    rrb.Spatial2DView(
+                        name="What you should get after removing overrides from 1)",
+                        visual_bounds=visual_bounds,
+                        defaults=defaults,
+                    ),
+                    rrb.Spatial2DView(
+                        name="What you should get after removing defaults from 2)",
+                        visual_bounds=visual_bounds,
+                    ),
+                    rrb.Spatial2DView(
+                        name="What you should get after adding overrides & defaults to 3)",
+                        visual_bounds=visual_bounds,
+                        overrides={
+                            "arrows": [
+                                rrb.VisualizerOverrides([
+                                    rrb.visualizers.Arrows2D,
+                                    rrb.visualizers.Points2D,
+                                ]),
+                                rr.components.Color([255, 255, 255]),
+                                rr.components.Radius(0.1),
+                                rr.components.Text("Cerberus"),
+                                rr.components.Position2D([0.0, 0.0]),
+                            ]
+                        },
+                    ),
+                ),
+                grid_columns=3,
+                column_shares=[1, 1, 1],
+            ),
+            rrb.BlueprintPanel(state="collapsed"),
+            rrb.TimePanel(state="collapsed"),
+        )
+    )
+
+
+def run(args: Namespace) -> None:
+    rr.script_setup(args, f"{os.path.basename(__file__)}", recording_id=uuid4())
+
+    log_readme()
+    log_boxes()
+
+
+if __name__ == "__main__":
+    import argparse
+
+    parser = argparse.ArgumentParser(description="Interactive release checklist")
+    rr.script_add_args(parser)
+    args = parser.parse_args()
+    run(args)