enable group quant

Signed-off-by: Kyle Sayers <[email protected]>

Author: kylesayrs

src/compressed_tensors/quantization/quant_scheme.py

@@ -63,6 +63,7 @@ def validate_model_after(model: "QuantizationScheme") -> "QuantizationScheme":
             if inputs.strategy not in (
                 QuantizationStrategy.TOKEN,
                 QuantizationStrategy.TENSOR,
+                QuantizationStrategy.GROUP,
                 QuantizationStrategy.TENSOR_GROUP,
             ):
                 raise NotImplementedError(