Add setConnectionPoolTimeout api to RoomDatabase.Builder

Exposes a new `setConnectionPoolTimeout(timeout: Duration)` API on `RoomDatabase.Builder` to allow configuring the maximum duration to wait when acquiring a connection from `ConnectionPool` before timing out with an `SQLiteException`.

Bug: 404380974
Test: Unit tests
Relnote: "Added `setConnectionPoolTimeout(timeout: Duration)` to `RoomDatabase.Builder` to allow configuring the connection pool timeout."
Change-Id: I24d073422ee59c2fb4759098eccbba61239a18f7