build: Added appdata metainfo file to AppImage

.github/workflows/build.yml

@@ -283,6 +283,8 @@ jobs:
       - name: 📦 Bundle AppImage
         run: |
           cd build-appimage
+          mkdir -p ./AppDir/usr/share/metainfo
+          cp ../dist/imhex.appdata.xml ./AppDir/usr/share/metainfo/imhex.appdata.xml
           appimage-builder --recipe ../dist/AppImageBuilder.yml
           mv ImHex-AppImage-x86_64.AppImage ../imhex-${{env.IMHEX_VERSION}}.AppImage
           cd ..

dist/imhex.appdata.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<component type="desktop-application">
+	<id>imhex</id>
+	<metadata_license>GPL-2.0</metadata_license>
+	<project_license>GPL-2.0</project_license>
+	<name>ImHex</name>
+	<summary>A Hex Editor for Reverse Engineers, Programmers and people who value their retinas when working at 3 AM</summary>
+	<description>
+		<p>ImHex is a feature-rich Hex Editor aimed towards Reverse Engineers working with foreign data formats, malware, executables and raw memory. 
+Besides all the features a common Hex Editor has, ImHex also features a custom scripting language used to declare and dissect data structures, support for running YARA rules, a node-based graphical data pre-processor and support for various data sources such as files, raw disks or GDB Servers.</p>
+	</description>
+	<launchable type="desktop-id">imhex.desktop</launchable>
+	<url type="homepage">https://imhex.werwolv.net</url>
+	<screenshots>
+		<screenshot type="default">
+			<image>https://user-images.githubusercontent.com/10835354/139717326-8044769d-527b-4d88-8adf-2d4ecafdca1f.png</image>
+		</screenshot>
+	</screenshots>
+	<provides>
+		<id>imhex.desktop</id>
+	</provides>
+</component>