Add and fix a few more /to/ links for Flutter tool (#10772)

Contributes to #10363

Author: parlough

firebase.json

@@ -123,7 +123,7 @@
       { "source": "/get-started/install/null", "destination": "/get-started/install", "type": 301 },
       { "source": "/get-started/web", "destination": "/platform-integration/web/building", "type": 301 },
       { "source": "/ios-14", "destination": "/platform-integration/ios/ios-debugging", "type": 301 },
-      { "source": "/ios-project-migration", "destination": "/platform-integration/ios", "type": 301 },
+      { "source": "/ios-project-migration", "destination": "https://web.archive.org/web/20220614103526/https://docs.flutter.dev/development/ios-project-migration", "type": 301 },
       { "source": "/layout", "destination": "/ui/layout", "type": 301 },
       { "source": "/material-3-migration", "destination": "/release/breaking-changes/material-3-migration", "type": 301 },
       { "source": "/packages-and-plugins/androidx-compatibility", "destination": "/platform-integration/android/androidx-migration", "type": 301 },
@@ -654,9 +654,13 @@
       { "source": "/to/deep-linking", "destination": "/ui/navigation/deep-linking", "type": 301 },
       { "source": "/to/develop-packages", "destination": "/packages-and-plugins/developing-packages", "type": 301 },
       { "source": "/to/develop-plugins", "destination": "/packages-and-plugins/developing-packages#plugin", "type": 301 },
+      { "source": "/to/edit-plugins", "destination": "/packages-and-plugins/developing-packages#edit-plugin-package", "type": 301 },
       { "source": "/to/editor-setup", "destination": "/get-started/editor", "type": 301 },
+      { "source": "/to/endorsed-federated-plugin", "destination": "/packages-and-plugins/developing-packages#endorsed-federated-plugin", "type": 301 },
       { "source": "/to/federated-plugins", "destination": "/packages-and-plugins/developing-packages#federated-plugins", "type": 301 },
+      { "source": "/to/ffi-package", "destination": "/packages-and-plugins/developing-packages#plugin-ffi", "type": 301 },
       { "source": "/to/flutter-fix", "destination": "/tools/flutter-fix", "type": 301 },
+      { "source": "/to/flutter-gradle-plugin-apply", "destination": "/release/breaking-changes/flutter-gradle-plugin-apply", "type": 301 },
       { "source": "/to/flutter-test-docs", "destination": "https://api.flutter.dev/flutter/flutter_test/flutter_test-library.html", "type": 301 },
       { "source": "/to/font-from-package", "destination": "/cookbook/design/package-fonts#use", "type": 301 },
       { "source": "/to/gesture-disambiguation", "destination": "/ui/interactivity/gestures#gesture-disambiguation", "type": 301 },
@@ -676,6 +680,7 @@
       { "source": "/to/ios-development-team", "destination": "/deployment/ios#review-xcode-project-settings", "type": 301 },
       { "source": "/to/ios-ffi", "destination": "/platform-integration/ios/c-interop", "type": 301 },
       { "source": "/to/ios-minimum-target", "destination": "/deployment/ios#review-xcode-project-settings", "type": 301 },
+      { "source": "/to/java-gradle-incompatibility", "destination": "/release/breaking-changes/android-java-gradle-migration-guide", "type": 301 },
       { "source": "/to/linux-android-setup", "destination": "/get-started/install/linux/android", "type": 301 },
       { "source": "/to/macos-android-setup", "destination": "/get-started/install/macos/mobile-android", "type": 301 },
       { "source": "/to/macos-deploy", "destination": "/deployment/ios/macos", "type": 301 },
@@ -686,6 +691,7 @@
       { "source": "/to/minimize-layout-passes", "destination": "/perf/best-practices#minimize-layout-passes-caused-by-intrinsic-operations", "type": 301 },
       { "source": "/to/performance-overlay", "destination": "/perf/ui-performance#performance-overlay", "type": 301 },
       { "source": "/to/platform-channels", "destination": "/platform-integration/platform-channels", "type": 301 },
+      { "source": "/to/platform-channels-codec", "destination": "/platform-integration/platform-channels#codec", "type": 301 },
       { "source": "/to/platform-plugins", "destination": "/packages-and-plugins/using-packages", "type": 301 },
       { "source": "/to/previous-releases", "destination": "/release/archive", "type": 301 },
       { "source": "/to/profile-mode", "destination": "/testing/build-modes#profile", "type": 301 },