fad88e6f86 ci: Remove use of cd (MarcoFalke)
fa2941bbf4 ci: Remove unmaintained extended_lint (MarcoFalke)
fa04187528 scripted-diff: Use ci DEPENDS_DIR, remove BASE_BUILD_DIR (MarcoFalke)
fa0656d1eb ci: Add DEPENDS_DIR variable, Add documentation for folders (MarcoFalke)
faeeca87b6 scripted-diff: Move various folders to ci scratch dir (MarcoFalke)
Pull request description:
Some minor cleanups:
* Remove unused and unmaintained extended_lint to avoid ci bottlenecks and waste of CPU
* Move all folders that hold temporary ci files to the ci scratch dir (except for the build dirs)
* Add some documentation to folders and remove the `BASE_BUILD_DIR` alias for the root directory
* Fixes#17178 by removing `cd`
Top commit has no ACKs.
Tree-SHA512: f6eb9d47ab98c08af59a79c2a4bf62fc331f0f6f3174909a28f2c2f48b0234423da5aee876225d2e188619b71b008d882a20d29a7aca68248039ea5080be5af5