To make sure that the code stays maintainable, I added the `importas` linter to ensure that the imports for models and services stay consistent.
I realised that this might be needed after finding some discrepancies between singular/plural naming, and, especially in the case of the `forgejo.org/services/context` package, multiple different aliases like `gitea_ctx`, `app_context` and `forgejo_context`. I decided for `app_context`, as that seems to be the most commonly used naming.
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/10253
Reviewed-by: Gusted <gusted@noreply.codeberg.org>
Co-authored-by: nachtjasmin <nachtjasmin@posteo.de>
Co-committed-by: nachtjasmin <nachtjasmin@posteo.de>