[telephony2] Define MTS tests

This steps defines the MTS tests by:
1. Add android_test soong_module in the Android.bp file.
2. Create the MTS configuration xml file.
3. Create the MTS tests list xml file.

Bug: 409547286
Test: presubmit
Flag: TEST_ONLY
Change-Id: I8515572b172739d7f631fadd2d3894b61d81c6be
8 files changed