Add Flatpak image build

flatpak/ch.dissem.YAEP.yml

@@ -0,0 +1,35 @@
+id: ch.dissem.YAEP
+runtime: org.freedesktop.Platform
+runtime-version: '25.08'
+sdk: org.freedesktop.Sdk
+sdk-extensions:
+  - org.freedesktop.Sdk.Extension.openjdk21
+command: yaep
+finish-args:
+  - --socket=x11
+  - --device=dri # Required for better X11 performance
+  - --share=ipc # Required for better X11 performance
+  - --env=PATH=/app/bin:/app/jre/bin:/usr/bin
+  - --env=JAVA_HOME=/app/jre
+modules:
+  - name: openjdk
+    buildsystem: simple
+    build-commands:
+      - /usr/lib/sdk/openjdk21/install.sh
+  - name: yaep
+    buildsystem: simple
+    sources:
+      - type: dir
+        path: ../desktop/build/compose/jars/
+      - type: dir
+        path: ../flatpak/info/
+      - type: script
+        dest-filename: yaep
+        commands:
+          - java -jar /app/data/yaep.jar
+    build-commands:
+      - install -Dm755 yaep                        /app/bin/yaep
+      - install -Dm644 YAEP-*-release.jar          /app/data/yaep.jar
+      - install -Dm644 ch.dissem.YAEP.desktop      /app/share/applications/ch.dissem.YAEP.desktop
+      - install -Dm644 ch.dissem.YAEP.svg          /app/share/icons/hicolor/scalable/apps/ch.dissem.YAEP.svg
+      - install -Dm644 ch.dissem.YAEP.metainfo.xml /app/share/metainfo/ch.dissem.YAEP.metainfo.xml