Add INT8-INT4-HQQ to model release script

[metascroy]

Adds a new INT8-INT4-HQQ to the model release script. I find HQQ improves quality for MMLU on every model I tried:

MODEL			INT8-INT4		INT8-INT4-HQQ
---------------------------------------------
Gemma3			0.50			0.55
SmolLM3-3B		0.5397			0.5546
Phi4-mini-4B	0.6050			0.6156
Qwen3-4B		0.6526			0.6585			
Llama1B			0.2892			0.3153	

[pytorch-bot]

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