It was never in action since migrating from travis to github actions.

Problem:
Dirs "config", "packaging", and "third-party" are all closely related
but this is not obvious from the layout. This adds friction for new
contributors.

Solution:
- rename config/ to cmake.config/
- rename test/config/ to test/cmakeconfig/ because it is used in Lua
  tests: require('test.cmakeconfig.paths').
- rename packaging/ to cmake.packaging/
- rename third-party/ to cmake.deps/ (parallel with .deps/)

On GitHub Actions it just repeats the summary that is shown just after.
When run outside of GitHub Actions it erroneously shows the summary of
the previous suites.

We always know where in the test we are anyway, it's just needless
repetition.

This should help combat some of the lagginess when looking at the CI
logs in the browser.