Access repos by their IDs

[anbraten]

closes #1295
closes #648

TODO

• add new routes with :repoID
• load repo in middleware using :repoID if present
• update UI routes :owner/:name to :repoID
• load repos using id in UI
• add lookup endpoint :owner/:name to :repoID
• redirect :owner/:name to :repoID in UI
• use badge with :repoID route in UI
• update woodpecker-go
• check cli
• add migrations / deprecation notes
• check if support nested repositories (GitLab) #648 got solved directly
• Test
  • create repo
  • repo pages
  • ui redirects
  • forge status links

[woodpecker-bot]

Deployment of preview was successful: https://woodpecker-ci-woodpecker-pr-1691.surge.sh

[lafriks]

Maybe they could use different routes: /<owner>/<repo> and /repos/<id>?

[anbraten]

Tried that at the beginning. One issue was that the links of the repo views need to distinguish pointing to the owner-repo or the repo-id route, so we would need to duplicate those views / add some routing helper or always use the repo-id in links again which would result in almost the same way as directly redirecting

[anbraten]

@lafriks I changed some parts and removed some deprecation plannings. Would these changes be fine for you:

• api routes via id only + lookup endpoint to find repo id
• badges via id and owner/name combination
• UI via id, owner/name combination will be redirected