Use YAML for Flatpak.

flatpak/org.eu.encom.matrique.yaml

@@ -0,0 +1,23 @@
+---
+id: org.eu.encom.matrique
+runtime: org.kde.Platform
+runtime-version: '5.11'
+sdk: org.kde.Sdk
+command: matrique
+finish-args:
+- "--share=ipc"
+- "--share=network"
+- "--socket=x11"
+- "--socket=wayland"
+- "--device=dri"
+- "--filesystem=home"
+- "--filesystem=/tmp"
+- "--talk-name=org.freedesktop.Notifications"
+- "--talk-name=org.kde.StatusNotifierWatcher"
+modules:
+- name: matrique
+  buildsystem: qmake
+  sources:
+  - type: dir
+    path: ../
+