updates stubs with new reload method.

Author: filiplajszczak

pythonanywhere/project.pyi

@@ -15,4 +15,5 @@ class Project:
     def sanity_checks(self, nuke: bool) -> None: ...
     def create_webapp(self, nuke: bool) -> None: ...
     def add_static_file_mappings(self) -> None: ...
+    def reload_webapp(self) -> None: ...
     def start_bash(self) -> None: ...