Closes#13877
Closes#13879

This PR is kind of massive because all of the existing template views assume that the template you're looking at is in the default org. Allowing creating a template under any org, means all of this UI needs to be updated, some tests need to change, etc. This even sparked a pretty large backend change (tho that became its own PR and has already been merged).

Important note (reviewers, seriously please read this)

1. You currently cannot find the template you created in the UI on the /templates page. This is intentional! That work was already completed in a different PR, which unfortunately got reverted. This change is purely to enable creating templates in other orgs, and is already large. The rest of the flow will come (back) later. :)

2. Make sure you have a provisioner connected to whatever org you want to create a template for if you try kicking the tires on this. This requires some manual effort and know-how, so please let me know if you need help testing.