Add the query to get all backup plans.

tui_rsync/core/components/backup_plan/application/Queries/__init__.py

@@ -0,0 +1,3 @@
+from .get_all_backup_plans_query import GetAllBackupBackupPlansQuery
+
+__all__ = ['GetAllBackupBackupPlansQuery']

tui_rsync/core/components/backup_plan/application/Queries/get_all_backup_plans_query.py

@@ -0,0 +1,8 @@
+from tui_rsync.infrastructure.orm.dto.dtos import BackupPlanDTO
+
+from tui_rsync.infrastructure.orm.models import BackupPlanModel
+
+
+class GetAllBackupBackupPlansQuery:
+    def execute(self):
+        return (BackupPlanDTO.to_domain(model) for model in BackupPlanModel.select().iterator())