Re-try binding to TouchInteractionService if service is killed

For problem explanation, see b/190339338#comment26.
When the binding dies, this attempts to retry
binding to the service with a backoff duration of
(1000 * 2^N)ms where N is # of attempts.

Bug: 190339338
Test: Taskbar seems interactable more consistently.
Manually failed the binding a couple times to see
retry mechanism and verified by logging locally.

Change-Id: Ia76207d0b2ef30b425ee1d7c66d7dee453bca7d8