Add page id enum for a11y downloaded features

- Add SettingsEnums.ACCESSIBILITY_SCANNER
- Add SettingsEnums.ACTION_BLOCKS
- Add SettingsEnums.MAGNIFIER
- Add SettingsEnums.PROJECT_RELATE

Bug: 406672952
Bug: 393980229
Test: Manual testing on Pixel and non-Pixel devices
Flag: com.android.server.accessibility.enable_low_vision_generic_feedback
Change-Id: Ia54b6b031c9e75372e46500cbff4bd886d346bac
1 file changed
tree: cbd8fe23e35fb3153def1b682b980a11e3868fca
  1. stats/
  2. OWNERS