Move suggestion device chip state management into a separate class

The suggestion device chip is only used by the Media Controls and the
state management is specific to that piece of UI. Moving that logic out
of generic InfoMediaManager to SuggestedDeviceManager for the ease of
maintenance.

Bug: 428663871
Test: atest SuggestedDeviceManagerTest
Test: atest LocalMediaManagerTest InfoMediaManagerTest
Test: atest MediaDeviceManagerTest
Test: On a physical device
Flag: com.android.media.flags.enable_suggested_device_api
Change-Id: I1d32370dd0c7274a37828584f9de6b657d70c70d