NUI logging

- Add screen events for 4 tabs, dialpad and search.
- Add impressions for opening MainActivity with tabs/dialpad (non user tab selection).
- Add impression for VVM visible.

Bug: 72525843
Test: MainActivityOldPeerTest, MainSearchControllerTest
PiperOrigin-RevId: 188090249
Change-Id: Ifdf3519f07d7230f20b5d82691a96747b1944d63