Initial MailGateway module structure

manifest.json

@@ -0,0 +1,9 @@
+{
+  "id": "mailgateway",
+  "type": "mod",
+  "name": "Mail Gateway",
+  "description": "Import incoming email into FOSSBilling support tickets.",
+  "author": "Seb's Space",
+  "version": "0.1.0",
+  "license": "Apache-2.0"
+}