cleanups + bugfixes

[RonnyPfannschmidt]

• closes Timeout with version 8.0.4 (git describe) #957
• closes Type in config doc #966
• closes setuptools_scm does not create a version file after 8.0.0 release #960
• closes pyproject.toml does not contain a tool.setuptools_scm section #953

[eachimei]

@RonnyPfannschmidt please kindly note that in git.py in run_git there's currently a default value to timeout: int = 20. As a result, the changes of BROKEN_TIMEOUT (env var override) won't take effect.
Also, in fetch_shallow() a timeout value of 240 is passed into run_git call so if the user overrides the env-var it won't impact this subprocess call.

[RonnyPfannschmidt]

thanks for the note, - i completely missed that detail - i'll integrate the none pass-over there as well

[RonnyPfannschmidt]

i'll leave the timeout i fetch shallow for now as its intentional as is and the delay should work as intended for now

its not used by default and i'll start to recommend people prepare unshallow in ci instead of adding the setting to setuptools_scm

[eachimei]

alright, sounds good 👍