Add appstream metainfo file

data/org.asamk.SignalCli.metainfo.xml

@@ -0,0 +1,55 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<component type="console-application">
+  <id>org.asamk.SignalCli</id>
+
+  <name>signal-cli</name>
+  <summary>Use Signal messenger in terminal</summary>
+  <developer id="org.asamk">
+    <name>AsamK</name>
+  </developer>
+  <icon type="stock">org.asamk.SignalCli</icon>
+
+  <url type="bugtracker">https://github.com/AsamK/signal-cli/issues</url>
+  <url type="homepage">https://github.com/AsamK/signal-cli</url>
+  <url type="donation">https://github.com/sponsors/AsamK</url>
+  <url type="faq">https://github.com/AsamK/signal-cli/discussions</url>
+  <url type="vcs-browser">https://github.com/AsamK/signal-cli</url>
+
+  <metadata_license>CC0-1.0</metadata_license>
+  <project_license>GPL-3.0-only</project_license>
+
+  <description>
+    <p>
+	    signal-cli is an unofficial commandline interface for the Signal Messenger.
+	    It supports many Signal functions, including registering, verifying, sending and receiving messages.
+	    For registering you need a phone number where you can receive SMS or incoming calls.
+	    Alternatively signal-cli can be linked to an existing App account.
+    </p>
+  </description>
+
+  <categories>
+    <category>Utility</category>
+    <category>Java</category>
+  </categories>
+
+  <provides>
+    <binary>signal-cli</binary>
+  </provides>
+  <content_rating type="oars-1.1">
+    <content_attribute id="social-chat">intense</content_attribute>
+  </content_rating>
+  <releases>
+    <release version="0.13.1" date="2024-02-27">
+      <url type="details">https://github.com/AsamK/signal-cli/releases/tag/v0.13.1</url>
+    </release>
+    <release version="0.13.0" date="2024-02-18">
+      <url type="details">https://github.com/AsamK/signal-cli/releases/tag/v0.13.0</url>
+    </release>
+    <release version="0.12.8" date="2024-02-08">
+      <url type="details">https://github.com/AsamK/signal-cli/releases/tag/v0.12.8</url>
+    </release>
+    <release version="0.12.7" date="2023-12-15">
+      <url type="details">https://github.com/AsamK/signal-cli/releases/tag/v0.12.7</url>
+    </release>
+  </releases>
+</component>