Changing language resource templates and field templates on GroupShare via Studio or GroupShare API possible?

Does anybody know whether this is possible via either the Studio or GroupShare API? The scenario here would be that a project manager would add for example variables or abreviations in a project management system so they are automatically added to the language resource templates in the background. As for fields and field values, a PM would add new fields or field values in his PM system which then would need to be added to the template on the server.
If modifying the templates would not work, would it work to modify the language resources and fields inside each TM?

Hope somebody has some thoughts about it ;-)

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