Add typing extensions to pyproject (#1763)

pyproject.toml

@@ -51,6 +51,7 @@ dependencies = [
     "torchmetrics[image]>=0.9.3",
     "torchtyping>=0.1.4",
     "torchvision>=0.13.0",
+    "typing_extensions>=4.4.0",
     "viser>=0.0.5",
     "nuscenes-devkit>=1.1.1",
     "wandb>=0.13.3",