* fix(app-frontend): do not emit exceptions when no loaders are available
* refactor(app): simplify Microsoft login code without functional changes
* feat(app): external browser auth flow for Modrinth account login
* chore: address Clippy lint
* chore(app/oauth_utils): simplify `handle_reply` error handling according to review
* chore(app-lib): simplify `Url` usage out of MC auth module
