1.21.1 java model support

Author: Spectrall368

src/main/resources/neoforge-1.20.6/generator.yaml

@@ -7,7 +7,7 @@ import:
 
 java_models:
   key: mojmap-1.20.x
-  compatible: [mojmap-1.17.x, mojmap-1.18.x, mojmap-1.19.x]
+  compatible: [mojmap-1.17.x, mojmap-1.18.x, mojmap-1.19.x, mojmap-1.21.x]
   requested_key_words: [ModelPart, ~ModelRenderer, ~(ResourceLocation.]
 
 # gradle task definitions