Create test module configs for WmTests

This will allow the infra to better shard the tests and reduce the WM presubmit runtime and flakiness.

WmTests will still be available for local execution.

Context: go/wm-infra-optimize

Test: atest WmTests
Flag: TEST_ONLY
Bug: 311643481
Bug: 395048271
Change-Id: I07913a457d90204195949010943286532e5b20aa