Merge remote-tracking branch 'studip/main'

.gitlab/merge_request_templates/StEP.md

.gitlab/merge_request_templates/TIC.md

app/controllers/web_migrate.php

app/views/web_migrate/history.php

app/views/web_migrate/index.php

cli/migrate.php

cli/plugin_manager

db/migrations/1.100_step00248_chat_extinction.php

db/migrations/1.101_step00246_blubber.php

db/migrations/1.102_remove_guestbook_migration.php

db/migrations/1.104_setup_cronjobs.php

db/migrations/1.105_step_00247_forum.php

db/migrations/1.106_step_00247_forum_data_migration.php

db/migrations/1.107_step00247_forum_performance.php

db/migrations/1.108_visibilityapi.php

db/migrations/1.109_init_custom_blubber_streams.php

db/migrations/1.10_image_proxy.php

db/migrations/1.110_scm_add_position.php

db/migrations/1.111_step_3574_domain.php

db/migrations/1.113_init_mailqueue.php