Create staircase.json (#775)

Author: kjonosm

data/presets/entrance/staircase.json

@@ -0,0 +1,16 @@
+{
+    "icon": "maki-entrance-alt1",
+    "geometry": [
+        "vertex"
+    ],
+    "tags": {
+        "entrance": "staircase"
+    },
+    "terms": [
+        "door",
+        "stairs",
+        "stairway",
+        "stairwell"
+    ],
+    "name": "Staircase Entrance"
+}