* Greenfield: Improve store users API
- Adds an endpoint to update store users (before they had to be removed ad re-added)
- Checks for the existance of a user and responds with 404 in that case (fixes#6423)
- Allows retrieval of user by user id or email for add and update (consistent with the other endpoints)
- Improves the API docs for the store users endpoints
* Swagger: Reuse UserIdOrEmail parameter component
* Add details to store user data
* Editorconfig: Add space_before_self_closing setting
This was a difference between the way dotnet-format and Rider format code. See https://www.jetbrains.com/help/rider/EditorConfig_Index.html
* Editorconfig: Keep 4 spaces indentation for Swagger JSON files
They are all formatted that way, let's keep it like that.
* Apply dotnet-format, mostly white-space related changes
