Fix appstream data

See merge request !105

Prepare v2.7.2

See merge request !104

Change CI to Gitlab

See merge request !103

Fix build with gcc-13

See merge request !102

libstdc++ of gcc-13 reduced its dependency on some headers like <cstdint>
so build of adriconf fails with:

  adriconf/Utils/PCIDatabaseQueryInterface.h:10:43: error: ‘uint16_t’ has
  not been declared

(and some more all related to uint16_t)

Signed-off-by: Lars Wendler <polynomial-c@gmx.de>

Prepare release v2.7

See merge request !101

Support new application attributes

See merge request !100

Remove dependency on X11 as we can do everything with EGL already

See merge request !99

Add more documentation on how adriconf works

See merge request !98

Reduce the minimum allowed size to also fit very small screens

See merge request !97

Update flatpak build file to match what is on FlatHub

See merge request !96

Upgrade to gtk4

See merge request !95

Replace xml lib

See merge request !94