Create RestifEye

[ANSHAY]

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[ANSHAY]

Hi, the test failure is a GLib version mismatch, the AppImage was built on ubuntu-24.04 which ships GLib 2.80, but the test runner is ubuntu-22.04 (GLib 2.72).
The crash:
/run/firejail/appimage/RestifEye: symbol lookup error:
undefined symbol: g_once_init_enter_pointer
g_once_init_enter_pointer was introduced in GLib 2.80 and doesn't exist on 22.04.

I'm pushing a new release built on ubuntu-22.04 to fix this, along with:

1. PNG icon at the AppDir root (fixes the "Icon is not in PNG format" lint warning)
2. AppStream metainfo in usr/share/metainfo/ (fixes the "No appdata file present" lint warning)

I'll update this PR once the new release is up. Thanks for your patience.