* Linux: Ignore linux directory from Godot imports
* MetaInfo: move releases to their own file
* editorconfig: set sensible defaults
* Linux: install release info in manifest
* Linux: add new icons to Flatpak manifest
Follow-up to #28
* MetaInfo: Update brand colors, add release notes
* GitHub Actions: Add Flatpak action
Help make sure any Linux changes don't break the Flatpak build.