feat: redesign issue processing to planning and question board with WIP PR workflow (#3)

Co-authored-by: Michael <michael@example.com>
Reviewed-on: #3

core/interfaces.py

@@ -84,6 +84,17 @@ class PullRequestsClient(ABC):
         self, owner: str, repo: str, head: str, base: str, title: str, description: str = ""
     ) -> PullRequestModel: ...
 
+    @abstractmethod
+    def update_pull_request(
+        self,
+        owner: str,
+        repo: str,
+        pull_number: int,
+        title: str | None = None,
+        body: str | None = None,
+        state: str | None = None,
+    ) -> PullRequestModel: ...
+
     @abstractmethod
     def approve_pr(self, owner: str, repo: str, pr_number: int, comment: str) -> dict[str, Any]: ...