[SB][Screen Chips] Add logs for the chip state.

This CL:
1) Adds logs in each of the interactors that affects the chips
2) Adds a log in the main view model stating which chips want to be
   shown.

In order to achieve #2, I added a fourth string to LogMessage.

Bug: 332662551
Flag: com.android.systemui.status_bar_screen_sharing_chips

Test: Start and stop each type of chip, then dump the StatusBarChips log
-> see all the right logs (see sample logs in b/332662551#comment35)

Change-Id: I21daaee19f8fc383c940925e77bb4df00f180389