Some cleanups in GitHub Actions CI

  - run tests on more Linux distributions
  - add test runs with clang sanitizers (TSAN / UBSAN for now)
  - check code formatting only once
  - check test scripts formatting (shfmt)
  - static analysis for test scripts (shellcheck)
  - save more test logs and other debug info
  - add missing pieces to Ubuntu packages
  - test .debs on clean machine before publishing
  - git clone full history for changelog generation
  - support old versions of git on Linux
  - rename some steps