Add openpilot tests

tinygrad_repo/test/external/external_test_embedding.py

@@ -0,0 +1,8 @@
+from tinygrad.tensor import Tensor
+from tinygrad.nn import Embedding
+
+if __name__ == "__main__":
+  vocab_size = 50257
+  dim = 128
+  test = Embedding(vocab_size, dim)
+  ret = test(Tensor([[1,2,3]])).numpy()