[client] Add API for asset expectations

Author: SamuelHassine

pyobas/apis/inject_expectation.py

@@ -21,6 +21,14 @@ def expectations_for_source(self, source_id: str, **kwargs: Any) -> Dict[str, An
         result = self.openbas.http_get(path, **kwargs)
         return result
 
+    @exc.on_http_error(exc.OpenBASUpdateError)
+    def expectations_assets_for_source(
+        self, source_id: str, **kwargs: Any
+    ) -> Dict[str, Any]:
+        path = f"{self.path}/assets/" + source_id
+        result = self.openbas.http_get(path, **kwargs)
+        return result
+
     @exc.on_http_error(exc.OpenBASUpdateError)
     def prevention_expectations_for_source(
         self, source_id: str, **kwargs: Any