Add pydantic model generation to gen-python

Author: dalito

template/justfile

@@ -99,9 +99,10 @@ gen-doc:
 [group('model development')]
 testdoc: gen-doc _serve
 
-# Generate the Python data model
+# Generate the Python data models (dataclasses & pydantic)
 gen-python:
   poetry run gen-project -d  {{pymodel}} -I python {{source_schema_path}}
+  poetry run gen-pydantic {{gen_pydantic_args}} {{source_schema_path}} > {{pymodel}}/{{schema_name}}_pydantic.py
 
 # Generate project files including Python data model
 [group('model development')]