This PR is to allow users to specify status checks by patterns. Users
can enter patterns in the "Status Check Pattern" `textarea` to match
status checks and each line specifies a pattern. If "Status Check" is
enabled, patterns cannot be empty and user must enter at least one
pattern.
Users will no longer be able to choose status checks from the table. But
a __*`Matched`*__ mark will be added to the matched checks to help users
enter patterns.
Benefits:
- Even if no status checks have been completed, users can specify
necessary status checks in advance.
- More flexible. Users can specify a series of status checks by one
pattern.
Before:
![image](https://github.com/go-gitea/gitea/assets/15528715/635738ad-580c-49cd-941d-c721e5b99be4)
After:
![image](https://github.com/go-gitea/gitea/assets/15528715/16aa7b1b-abf1-4170-9bfa-ae6fc9803a82)
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Co-authored-by: silverwind <me@silverwind.io>