distinguish final CCPO approval from acceptance of initial request

atst/models/request.py

@@ -157,6 +157,7 @@ class Request(Base):
         return {
             RequestStatus.PENDING_FINANCIAL_VERIFICATION: "mission_owner",
             RequestStatus.PENDING_CCPO_APPROVAL: "ccpo",
+            RequestStatus.PENDING_CCPO_ACCEPTANCE: "ccpo",
         }.get(self.status)
 
     @property

atst/models/request_status_event.py

@@ -13,6 +13,7 @@ class RequestStatus(Enum):
     STARTED = "Started"
     SUBMITTED = "Submitted"
     PENDING_FINANCIAL_VERIFICATION = "Pending Financial Verification"
+    PENDING_CCPO_ACCEPTANCE = "Pending CCPO Acceptance"
     PENDING_CCPO_APPROVAL = "Pending CCPO Approval"
     CHANGES_REQUESTED = "Changes Requested"
     APPROVED = "Approved"