Refactor the design and improve the animations of Accessibility Floating Menu(6/n).

Actions of this change:
To avoid users covering the background information when it’s not being used, we support the enable/disable opacity settings for users to apply.

Bug: 227715451
Test: atest MenuInfoRepositoryTest
Change-Id: I8309e5b66383aa5b742393c0294e47e5d33c04df