added mscHack Repo, Submodule. lotsa code, so maybe someone else could have a 2nd look.

.gitmodules

@@ -181,3 +181,7 @@
 	path = repos/KoralfxVCV
 	url = https://github.com/koralfx/KoralfxVCV
 	branch = master
+[submodule "repos/mscHack"]
+	path = repos/mscHack
+	url = https://github.com/mschack/VCV-Rack-Plugins
+	branch = master

manifests/mscHack.json

@@ -3,5 +3,6 @@
   "author": "Mark Schack",
   "license": "MIT",
   "manualUrl": "https://github.com/mschack/VCV-Rack-Plugins/blob/master/README.md#demo-vids",
-  "sourceUrl": "https://github.com/mschack/VCV-Rack-Plugins"
+  "sourceUrl": "https://github.com/mschack/VCV-Rack-Plugins",
+  "repoVersion": "0.6.0"
 }

repos/mscHack

@@ -0,0 +1 @@
+Subproject commit dd00037b4a3bc19285810f6381b54f7c57477248