Check inkscape filename matching actual filename

[ChillerDragon]

Added the optional dependency yq for xml parsing. But falls back to a 20 lines bash self rolled xml parser (what could possibly go wrong). There is no --fix that seemed to complex and error prone. So users have to fix it manually. That could potentially be annoying. We could also make it a warning instead of an error.

Also refactored all errors.

And structured the code into functions.

[Jupeyy]

i guess for this project having no --fix is ok, but i'd also be ok with a warning instead.
it's maybe still nice to have this simply because looking in the fails it says for example grass_main_chiller. And having chiller in the name is way too swag.

but otherwise looks fine, not like i could read that stuff anyway

[ChillerDragon]

Yea cring I caused 50% of the current mismatches.

Okay let's go with warning I will do it later.

[ChillerDragon]

I turned it into a warning. The CI will pass if a wrong filename is detected. And I also fixed all warnings.