Move all CTS test apps to a single folder This allows us to use a single test_mapping file for all apps instead of having it duplicated in each subproject. Context: go/wm-infra-optimize Also fix bpfmt errors Test: atest CtsWindowManagerDeviceAm Flag: TEST_ONLY Bug: 311643481 Change-Id: I328006cc311b004bf1522cad7ebf07ac1303b3a4