feat: add contract extension request functionality

- Implemented  method in  to allow customers to request an extension for expired contracts.
- Added  component in  for users to initiate extension requests.
- Updated  to include logic for handling extension requests for expired contracts.
- Enhanced  to display extension request options and status.
- Created migration to add  and  columns to the contracts table.
- Added unit tests for contract extension request and handling in .
- Defined DTOs for request and extension in .
- Updated types in  to include new fields related to contract extensions.

apps/edr-freight-web/backoffice/src/hooks/contracts/useContracts.ts

@@ -172,6 +172,14 @@ export function useContractMutations(contractId: string) {
     onError: (error) => toast.error(extractErrorMessage(error, "Failed to lift suspension")),
   });
 
+  const extend = useMutation({
+    mutationFn: (payload: Freight.ExtendContractDto) =>
+      contractsService.extend(contractId, payload),
+    onSuccess: (data) =>
+      onSuccess(data, `Contract extended — it is back to ${data.status}`),
+    onError: (error) => toast.error(extractErrorMessage(error, "Failed to extend contract")),
+  });
+
   const approveStep = useMutation({
     // The server derives the required role from the step itself, so the client
     // does not send one.
@@ -280,6 +288,7 @@ export function useContractMutations(contractId: string) {
     cancelByStaff,
     suspend,
     resume,
+    extend,
     approveStep,
     rejectStep,
     generateContract,