Add privacyfriendly memory

Still without any builds as it currently requires GMS.

metadata/org.secuso.privacyfriendlymemory.txt

@@ -0,0 +1,24 @@
+Categories:Games
+License:GPLv3
+Web Site:https://secuso.org/pfa
+Source Code:https://github.com/SecUSo/privacy-friendly-memory
+Issue Tracker:https://github.com/SecUSo/privacy-friendly-memory/issues
+
+Summary:Memory game
+Description:
+Privacy Friendly Memory is an implementation of the card game "Memory". This app
+is optimized regarding the user's privacy. It doesn't use any tracking
+mechanisms, neither it displays any advertisement.
+
+It belongs to the group of Privacy Friendly Apps developed at the
+[https://secuso.org/pfa SECUSO research group] of Technische Universität
+Darmstadt, Germany.
+.
+
+Repo Type:git
+Repo:https://github.com/SecUSo/privacy-friendly-memory
+
+Auto Update Mode:None
+Update Check Mode:Tags
+Current Version:1.0
+Current Version Code:1