[How-to] Add Codeberg (and Gitea theoraticly too) as custom Oauth2 login provider

[SadmL]

This is not is actual issue, it's more like how-to. I can't find any sort of wiki here, so I decided to put information here, because also I couldn't find any info about it via search engines.
What is helped - https://forgejo.codeberg.page/docs/latest/user/oauth2-provider/

1. Create app in Codeberg and copy Client ID and Client secret somewhere.
2. Go to your Nextcloud Admin settings,Social Login section, and create Custom Oauth2 provider.

Section	What to enter
Local/inner name	Codeberg
Name	Codeberg
API Base URL	https://codeberg.org
Authorize url (relative doesn't work for some reason 🤷)	https://codeberg.org/login/oauth/authorize
Token url	https://codeberg.org/login/oauth/access_token
Profile url	https://codeberg.org/login/oauth/userinfo
Logout url	leave empty
Client ID and Client secret	paste from step 1
Scope	read:user
Other after	leave empty if not sure

3. Tick Allow users to attach/connect their social logins box and click Save in the bottom of page.
4. Go in Incognito/Private window of your browser, go to your Nextcloud login page and copy path of Codeberg provider - Right click, copy link, save somewhere.
   Must look like this - https://cloud.example.org(/index.php)/apps/sociallogin/custom_oauth2/Codeberg
5. Go back to your created earlier Codeberg application, click Edit button and paste link from step 4 into Redirection URI section, click Save.
6. And you done! Try connect your Codeberg account to Nextcloud account from user settings Social Login section, it must work.

If you notice some misspelling here, I'm sorry, I'm not native English speaker 😅