This moves the generated pb files to the `sdk` module. This allows third parties to make use of them if desired (e.g. in upcoming plugins) and moves away from the `gen` nomenclature in the directory, since we are going to be adding some extra interface functions to the messages.
* Scopes inline version into update request body.
* Users inline version into update request body.
* Group inline version into update and add|set|remove member request body.
* Role inline version into update and add|set|remove grant|principal request body.
* Auth method inline version into update request body.
* Auth Account inline version into update request body.
* host catalog version is inlined for update.
* Gen after merge.
* Submitting template changes for version handling.