Add kirigami-addons to flatpak manifest

.flatpak-manifest.json

@@ -22,6 +22,12 @@
         "--own-name=org.kde.StatusNotifierItem-2-2"
     ],
     "modules": [
+        {
+            "name": "kirigamiaddons",
+            "config-opts": [ "-DBUILD_TESTING=OFF" ],
+            "buildsystem": "cmake-ninja",
+            "sources": [ { "type": "git", "url": "https://invent.kde.org/libraries/kirigami-addons.git" } ]
+        },
         {
             "name": "kquickimageeditor",
             "buildsystem": "cmake-ninja",

.gitignore

@@ -8,3 +8,4 @@ compile_commands.json
 .vscode/
 kate.project.ctags.*
 *.user
+.flatpak-builder/