Upload quant_config.json

Assuming this is a GEMM 128 group size AWQ quant, here is the missing `quant_config.json`.

I do alot of AWQ quants, and the community will remind me when I forget to add one to my repo ;)

quant_config.json

@@ -0,0 +1,6 @@
+{
+  "zero_point": true,
+  "q_group_size": 128,
+  "w_bit": 4,
+  "version": "GEMM"
+}