Add operation "Generate PGP Key Pair"

Have not yet found a nice way of working with the kbpgp API as it is
very callback heavy. Probably just my rusty javascript.

src/core/config/modules/PGP.js

@@ -0,0 +1,20 @@
+import PGP from "../../operations/PGP.js";
+
+
+/**
+ * PGP module.
+ *
+ * Libraries:
+ *  - kbpgp
+ *
+ * @author tlwr [toby@toby.codes]
+ * @copyright Crown Copyright 2017
+ * @license Apache-2.0
+ */
+let OpModules = typeof self === "undefined" ? {} : self.OpModules || {};
+
+OpModules.PGP = {
+    "Generate PGP Key Pair": PGP.runGenerateKeyPair,
+};
+
+export default OpModules;