Add fastlane support

fastlane/metadata/android/en-US/full_description.txt

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+Simulation of the famous Enigma cipher machine used in the Second World War.
+
+The Enigma Machine was a typewriter-like machine, which used a set of mechanical
+Rotors to achieve polyalphabetic substitution.
+
+Features:
+
+* Growing number of authentic Enigma-Models
+* Quickly encrypt any text by sharing it from any other app
+* Also quickly share encrypted texts from EnigmAndroid to any other app
+
+More Information about the historical Enigma can be found on
+[https://de.wikipedia.org/wiki/Enigma_%28Maschine%29 Wikipedia] (german).
+

fastlane/metadata/android/en-US/short_description.txt

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+Simulation of the Enigma Machine