Change module GenerateKeyfile to more versatile GenerateKey, which doesnt have to output to a file

GCryptCLI/include/ModuleGenerateKey.h

@@ -0,0 +1,15 @@
+#ifndef GCRYPTCLI_MODULE_GENERATEKEY_H
+#define GCRYPTCLI_MODULE_GENERATEKEY_H
+
+namespace Module {
+  // This module just generates a key, and outputs it.
+  // Can be used to create a keyfiles.
+  class GenerateKey {
+    public:
+      //! Will write the key to a file
+      static void Run();
+  };
+}
+
+#endif
+