Log Monitor condition updates to TableLogBuffer.

This change introduces a plugin interface for TableLogBuffer so Monitor,
which is under the shared/ target, can communicate through it and log
condition updates in a table format.

Bug: 280816949
Fix: 280816949
Test: atest ConditionMonitorTest
Test: adb bugreport and verify conditions logged as table in ABT

Change-Id: Ib5d69bba61a190ed0426ab548d2129572ced376c