[feature] Request support for Gitea

[huxiaoxi1992]

Is your feature request related to a problem? Please describe.
Gitea is a community managed lightweight code hosting server. We use Gitea instead of Gitlab as our self host code base.

We need support for Gitea.

Describe the feature you'd like

Gitea has its go packages, support OAuth2 applications and webhooks.

It can be useful for us to get the selection for code base and its branch instead of filling the form.

Describe alternatives you've considered
[A clear and concise description of any alternative solutions or features you've considered.]

Additional context
[Add any other context or screenshots about the feature request here.]

[wl4g]

+1

[fansi404]

@huxiaoxi1992 @wl4g we'll fully assess it