Added F3D, Heroic Games Launcher, itch.io, mastodon icons

[luzz-dev]

I added the .svg for:

• f3d
• com.heroicgameslauncher.hgl
• web-itch.io
• web-mastodon

[mtwebster]

Hi, you're missing hidpi icons - there's a script you should run instead of creating the pngs yourself that will create all the correct sizes (this could probably be a bit more obvious I know):

cd src
./render-apps-categories-bitmaps.py

I did a quick run with it and your svgs have a few minor internal issues as well - their sodipodi:docname and the text icon-name.

[luzz-dev]

Ohhhh, yeah, I thought I was missing something thanks, Iĺl do that now

[luzz-dev]

Alright, that should have fixed all the errors and missing icons.

[luzz-dev]

oh wait I forgot to hide a layer in the heroic games launcher edit: done!