Repo should be fetched by OWNER+NAME

[langecode]

Clear and concise description of the problem

Currently repository is fetched by concatenating "owner" and "name" from the path of the API and then searching for this as the name of the repository.

This means that if the "full name" of the repo does not follow a convention of concatenating "owner" + "name" then repository cannot be found. Effectively the "fullname" property could as well be removed. I.e., the links are rendered from "owner" and "name" which effectively is the semantic key of repo.

https://github.com/neticdk/woodpecker/blob/main/server/router/middleware/session/repo.go#L60

Suggested solution

Store should be extended with a function to fetch repository by owner+name instead of the concatenated string.

https://github.com/neticdk/woodpecker/blob/main/server/store/store.go#L54

Alternative

No response

Additional context

No response

Validations

• Checked that the feature isn't part of the next version already [https://woodpecker-ci.org/faq#which-version-of-woodpecker-should-i-use]
• Read the Contributing Guidelines.
• Read the docs.
• Check that there isn't already an issue that request the same feature to avoid creating a duplicate.