Add quality gate override flow

src/repo_registry/web_api/schemas.py

@@ -566,6 +566,14 @@ class QualityCriteriaRegistryResponse(BaseModel):
     criteria: list[QualityCriterionResponse]
 
 
+class QualityGateOverrideCreate(BaseModel):
+    criterion_id: str
+    element_type: str
+    element_id: int
+    reason: str
+    notes: str = ""
+
+
 class ObservedFactResponse(BaseModel):
     id: int
     repository_id: int