Improve the file-enumeration to first check for all files ending in
`*.py`, and for everything else run `/bin/file` on it, and check for
python mime-types.
Note that we expect the caller to open all those files anyway, and thus
this should not any significant overhead, unless we end up with lots of
non-python files in the repository (which is highly unlikely). But even
then, `/bin/file` only reads the first few bytes of a file, and will
default if those are not sufficient to detect the file type. Hence, not
much overhead is expected by this.
This change will now start adding scripts in ./tools/ to the linter,
including osbuild-mpp.
Signed-off-by: David Rheinsberg <david.rheinsberg@gmail.com>
c9ac6d5ee6