feat: add downloadProgress signal to Client

Author: merydian

ORStools/common/client.py

@@ -48,6 +48,8 @@ class Client(QObject):
     """Performs requests to the ORS API services."""
 
     overQueryLimit = pyqtSignal(int)
+    downloadProgress = pyqtSignal(int, int)
+
 
     def __init__(self, provider: Optional[dict] = None, agent: Optional[str] = None) -> None:
         """
@@ -118,6 +120,10 @@ def fetch_with_retry(
 
         blocking_request = QgsBlockingNetworkRequest()
 
+        blocking_request.downloadProgress.connect(
+            lambda r, t: self.downloadProgress.emit(r, t)
+        )
+
         logger.log(f"url: {self.url}\nParameters: {json.dumps(post_json, indent=2)}", 0)
 
         content = None