Introduce Gitea Apps

[a1012112796]

I'd like design something like github app,
and imply plugin logic by some more
features than github apps.
this is a early draft for waiting more response.

It will act like a individue user, which can be cosider as a bot acount or a plugin.

features design about gitea app:

• atc like indivdue bot acount through api by JWT auth (like github app)
• provide webhook (like github app)
• act as other user like oauth2 app (like github app)
• app will be allowed to provide service whch will be called by gitea like webhook,
  and it will request ontime response, the response will affect the gitea srvice logic. (plugin logic)

installition types:

• install by a repository
• install by a user
• install by a orgnization
• install by system

...

related:

• [Proposal] Add "bot account" as a type of user #13044

[wxiaoguang]

I see that many of your PRs are still pending.

Some maintainers and I have spent time on reviewing them.

Would you like to complete these pending PRs? If there are just more pending PRs, I have the question that whether my time spent on reviewing makes sense.

[a1012112796]

I see that many of your PRs are still pending.

Some maintainers and I have spent time on reviewing them.

Would you like to complete these pending PRs? If there are just more pending PRs, I have the question that whether my time spent on reviewing makes sense.

oh, sorry, I forgot them. I has closed all pull requsts which will not continue working on it in a long time. And in my view, the draft pull request is not necessary to review unless you are interesting in it.