### Problem description
The fonts list on Linux does not show all system fonts, and does not
show font names at all.
### Implementation description
Use Fontconfig to make the list less bad if Fontconfig headers are
available.
### Additional things
I like fonts.
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Co-authored-by: Nik <werwolv98@gmail.com>
* added update information
* upload zsync
* set version of appimage
* release: do not execute steps which needs a token when not provided
* set the appimage output name directly in the recipe file
* add metainfo file in every Linux package
* update metainfo file
* set categories in the metainfo file
* add both .metainfo.xml and .appdata.xml files because it is the old standard still wanted by some things
* actually use WerWolv's repository for AppImage updates
* rename metainfo files
* Typo : appdata and not appinfo
* split screenshots
* build: Tried to streamline and fix AppImage building
* build: Tried fixing build
* build: Added back version key
* build: Fixed AppImage name
* build: Fixed python bundling, fixed ELF uploading
* build: Don't upload a bunch of AppImage garbage files in the portable ELF version
* build: Fixed another wrong library path
* build: Removed old manual AppImage building scripts
