Gitea doesn't display README.md from other config directories

[lmariscal]

• Gitea version (or commit ref): 1.8.3
• Git version: N/A
• Operating system: Linux
• Database (use [x]):
  • PostgreSQL
  • MySQL
  • MSSQL
  • SQLite
• Can you reproduce the bug at https://try.gitea.io:
  • Yes https://try.gitea.io/lmariscal/readme-issue
  • No
  • Not relevant
• Log gist: N/A

Description

Github allows to have your reposs README.md under .github directory as shown in https://github.com/nimgl/nimgl and https://github.com/ocornut/imgui but Gitea doesn't render neither readmes under .github nor under .gitea. You can live test it in the repo provided above.

This has been previously mentioned in #5370 but there has been no follow up.

Screenshots

[lunny]

I have reopened #5370, please follow that issue.