[FEAT] New hook for parsing config file

[fdosani]

To enable multiple parsing methods and enable plugins to manage them would like to look into having an new hook right at the beginning for parsing. This is mainly to help support conda yaml files.

cc: @ak-gupta @NikhilJArora

[fdosani]

It might make sense to repurposed this issue to handle the output of a meta.yaml file to help with a conda build.

TLDR: right now we update setup.cfg, pyproject.toml or requirements.txt. We should also target meta.yaml for conda so ppl don't have to manually do that. This is specific for conda build file.