Add support for Gitea and Forgejo in token handling

- Enhanced the `with_token` function to support Gitea and Forgejo URLs by constructing the appropriate authentication format for generic HTTPS.
- Updated tests to validate the new functionality, ensuring correct token injection for Gitea URLs while maintaining existing behavior for GitHub and GitLab.
- Improved overall robustness of token handling across different platforms.

tests/test_seed.py

@@ -55,6 +55,10 @@ def test_git_token_injection():
     url = "https://github.com/org/Ext.git"
     assert "x-access-token:secret@" in with_token(url, "secret")
     assert strip_auth(with_token(url, "secret")) == url
+    gitea = "https://gitea.hsrv.site/mrleo1nid/swarm-assistent.git"
+    authed = with_token(gitea, "secret")
+    assert "oauth2:secret@gitea.hsrv.site" in authed
+    assert strip_auth(authed) == gitea
     assert is_sha("a" * 40)
     assert not is_sha("main")