Add oauth support

- Support azure, bitbucket, github, gitlab, google providers
- Add authentication page to settings

Co-authored-by: Suraj Kumar <srjkmr1024@gmail.com>
Co-authored-by: Michael Castanieto <mcastanieto@gmail.com>
Co-authored-by: Mike Kim <m.kim4247@gmail.com>

database/seeders/DatabaseSeeder.php

@@ -32,6 +32,7 @@ class DatabaseSeeder extends Seeder
             StandalonePostgresqlSeeder::class,
             ScheduledDatabaseBackupSeeder::class,
             ScheduledDatabaseBackupExecutionSeeder::class,
+            OauthSettingSeeder::class,
         ]);
     }
 }