Add a trace to link inputEventId and vsyncId

We should have an easy way to query in a perfetto trace
for the frame associated with an input event.
This change adds a trace event to do that.

Bug: 363076084
Test:
https://ui.perfetto.dev/#!/?s=039fa15daa0e4cd005587a64962b5a48f7910cec
Verified the new slice has the correct vsyncId and inputEventId.
Flag: EXEMPT log only update

Change-Id: I2d4e5e439076c94b195cbe328b66d0c988e10661