Refactor TRACE_INFO

- Move app/trace_info.ts -> trace/trace_info.ts to allow parsers
  to use TRACE_INFO. This also fixes already-existing wrong dependencies
  like viewer -> app

- Improve error messages in the parsing layer
  (meaningful trace type name, instead of number)

Bug: 276433199
Test: npm run test:presubmit
Change-Id: I4cc28e11a6484d19fd2d4b6930a41ae882a67e81
15 files changed