Add common Linux app metadata, used for Flatpak

Quelea/CHANGE VERSION

@@ -3,6 +3,7 @@ When changing the version number, it needs to be changed in:
 1) Version constant in QueleaProperties.java (remember the minor version constant as the second argument if this is an Alpha / Beta / another dev release.)
 2) gradle.properties
 3) snap/snapcraft.yaml
+4) Add a <release> tag to releases in flatpak/org.quelea.Quelea.metainfo.xml (Linux metainfo)
 
 Everything else should now be automated.
 

flatpak/org.quelea.Quelea.desktop

@@ -0,0 +1,9 @@
+[Desktop Entry]
+Terminal=false
+Categories=AudioVideo;
+Keywords=church;projection;media;multimedia;video;song;hymn;lyrics
+Type=Application
+Name=Quelea
+Icon=org.quelea.Quelea
+Comment=Projection software for churches
+Exec=quelea

flatpak/org.quelea.Quelea.metainfo.xml

@@ -0,0 +1,97 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Copyright 2025 Ebbe Zeinstra -->
+<component type="desktop-application">
+
+  <id>org.quelea.Quelea</id>
+
+  <metadata_license>CC0-1.0</metadata_license>
+  <project_license>GPL-3.0</project_license>
+
+  <name>Quelea</name>
+  <summary>Open source projection software for churches</summary>
+
+  <developer id="org.quelea">
+    <name>Michael Berry</name>
+  </developer>
+
+  <description>
+    <p>Quelea is an open source projection application specifically tailored for churches.</p>
+
+    <p>With one dashboard you have an overview for the entire church service and can control
+    which songs, bible texts, images and more multimedia you want to project on the big screen.</p>
+  </description>
+
+  <launchable type="desktop-id">org.quelea.Quelea.desktop</launchable>
+
+  <branding>
+    <color type="primary" scheme_preference="light">#05BAFC</color>
+    <color type="primary" scheme_preference="dark">#3C6788</color>
+  </branding>
+
+  <content_rating type="oars-1.1" />
+
+  <url type="bugtracker">https://github.com/quelea-projection/Quelea/issues</url>
+  <url type="homepage">https://quelea.org/</url>
+  <url type="contact">https://quelea.discourse.group</url>
+  <url type="faq">https://quelea-projection.github.io/docs/FAQ_(Frequently_Asked_Questions)</url>
+  <url type="translate">https://quelea-projection.github.io/lang/</url>
+  <url type="contribute">https://github.com/quelea-projection/Quelea/blob/master/CONTRIBUTING.md</url>
+  <url type="vcs-browser">https://github.com/quelea-projection/Quelea</url>
+
+  <screenshots>
+    <screenshot type="default">
+      <image>https://raw.githubusercontent.com/quelea-projection/Quelea/e00d97b97ec8f8ddc3edd5f90bc7f24716601656/screenshot.png</image>
+      <caption>Main Quelea dashboard view</caption>
+    </screenshot>
+  </screenshots>
+
+  <recommends>
+    <control>keyboard</control>
+    <control>pointing</control>
+    <display_length compare="ge">768</display_length>
+  </recommends>
+
+  <releases>
+    <release version="2024.1" date="2024-05-11">
+      <url type="details">https://github.com/quelea-projection/Quelea/blob/master/Quelea/changelogs/changelog-2024.1.txt</url>
+      <description>
+        <p>Quelea (2024.1) stable</p>
+          <ul>
+            <li>Various minor bugfixes</li>
+            <li>Upgrade to Java21 and OpenJFX 21</li>
+            <li>Default translations now used when adding song via server</li>
+            <li>Support for bible book names in chapters in Zefania XML import</li>
+          </ul>
+      </description>
+    </release>
+    <release version="2024.0" date="2024-01-06">
+      <url type="details">https://github.com/quelea-projection/Quelea/blob/master/Quelea/changelogs/changelog-2024.0.txt</url>
+      <description>
+        <p>Quelea (2024.0) stable</p>
+          <ul>
+            <li>Migrate to GStreamer for video playback</li>
+            <li>Videos can now be played in preview windows</li>
+            <li>Video backgrounds now animate in preview windows</li>
+            <li>Include all item types in printed order of service schedule</li>
+            <li>Allow renaming of image group</li>
+            <li>Videos can now be dragged onto a schedule like images</li>
+            <li>Song information can now be shown on first, last or all slides</li>
+            <li>Prevent blacked stage view option</li>
+            <li>Regression: VLCARG files will no longer work (afraid this is a necessary casualty of moving to GStreamer)</li>
+            <li>Logo display now supports video files</li>
+            <li>Unsupported videos now have clear unsupported preview image</li>
+            <li>Allow multiple selection in song database</li>
+            <li>Critical fix: Using the French language no longer crashes Quelea when opening the options dialog</li>
+            <li>Various minor bugfixes</li>
+          </ul>
+      </description>
+    </release>
+    <release version="2022.0" date="2022-04-29" />
+    <release version="2021.0" date="2021-10-09" />
+    <release version="2020.0" date="2020-08-19" />
+    <release version="2019.1" date="2019-07-09" />
+    <release version="2019.0" date="2019-03-11" />
+    <release version="2018.1" date="2018-06-07" />
+    <release version="2018.0" date="2018-05-31" />
+  </releases>
+</component>