Add metadata for Leafpad app

metadata/com.git.amarradi.leafpad.yml

@@ -0,0 +1,31 @@
+Categories:
+  - Note
+  - Writing
+License: GPL-3.0-only
+AuthorName: Marcus Radisch
+SourceCode: https://github.com/amarradi/leafpad
+IssueTracker: https://github.com/amarradi/leafpad/issues
+Translation: https://hosted.weblate.org/engage/leafpad
+Changelog: https://github.com/amarradi/leafpad/releases
+Liberapay: amarrradi
+
+AutoName: Leafpad
+
+RepoType: git
+Repo: https://github.com/amarradi/leafpad.git
+Binaries: https://github.com/amarradi/leafpad/releases/download/leafpad_%v/app-release.apk
+
+Builds:
+  - versionName: '1.21'
+    versionCode: 29
+    commit: f7883163251dd14274670fa5dffb4e61112ef0fd
+    subdir: app
+    gradle:
+      - yes
+
+AllowedAPKSigningKeys: 3ece727648c312b6644b663cdfe54177250718dd32a36c8819d1222e18842f31
+
+AutoUpdateMode: Version
+UpdateCheckMode: Tags
+CurrentVersion: '1.21'
+CurrentVersionCode: 29