API endpoint for organization creation

[bboehmke]

• Gitea version (or commit ref): 1.5.3
• Git version: not relevant (website issue)
• Operating system: Linux
• Database (use [x]):
  • PostgreSQL
  • MySQL
  • MSSQL
  • SQLite
• Can you reproduce the bug at https://try.gitea.io:
  • Yes (provide example URL)
  • No
  • Not relevant
• Log gist:

Description

It seems that there is no API endpoint to create an organization (at least I can not find it).

I expected something like POST /orgs/ but this does not exist in swagger:
https://try.gitea.io/api/swagger#/organization
The function is also missing in the go client library of Gitea: https://github.com/go-gitea/go-sdk/blob/master/gitea/org.go

I also found an old pull request for gogs: gogs/gogs#4835
There an API endpoint for the creation of organizations was added.