[TeX] Introduced libexpresscatalog helper library

- supports read catalog of cfg files
- metric id hash generation
- metric name convention validation
- test to validate catalog metric configurations

Bug: 266008139
Test: build, refactoring CL, existing tests should pass
Change-Id: I4019d57b73f894ecaeaf6599954d1ec5edd3efa9
Merged-In: I4019d57b73f894ecaeaf6599954d1ec5edd3efa9
9 files changed
tree: d62419a5e010d9dede3d7ce2745b0185592a5681
  1. stats/
  2. OWNERS