chore(flathub): move the metadata in the repo

flathub/net.casimirlab.frigoligo.metainfo.xml

@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Copyright 2024 Martin Chaine -->
+<component type="desktop-application">
+  <id>net.casimirlab.frigoligo</id>
+
+  <name>Frigoligo</name>
+  <summary>Your articles with you</summary>
+
+  <metadata_license>MIT</metadata_license>
+  <project_license>MIT</project_license>
+
+  <developer_name>Martin Chaine</developer_name>
+	<url type="homepage">https://github.com/casimir/frigoligo</url>
+	<url type="bugtracker">https://github.com/casimir/frigoligo/issues</url>
+	<url type="translate">https://hosted.weblate.org/engage/frigoligo/</url>
+
+  <supports>
+    <control>pointing</control>
+    <control>keyboard</control>
+    <control>touch</control>
+    <control>tablet</control>
+  </supports>
+
+  <description>
+    <p>
+      Take your links anywhere and keep them fresh! Frigoligo is a wallabag client striving to be simple but also fast and easy to use. Just like wallabag, Frigoligo is free to use, ad-free and open source.
+    </p>
+    <p>
+      You need a wallabag instance to use this application.
+    </p>
+  </description>
+
+  <content_rating type="oars-1.1" />
+
+  <releases>
+    <release version="v2.1.3" date="2024-12-15" />
+  </releases>
+
+
+  <launchable type="desktop-id">net.casimirlab.frigoligo.desktop</launchable>
+  <screenshots>
+    <screenshot type="default">
+      <caption>Main screen showing a listing of the saved articles.</caption>
+      <image>https://raw.githubusercontent.com/casimir/frigoligo/v2.1.3/assets/screenshots/desktop.png</image>
+    </screenshot>
+  </screenshots>
+</component>