feat: add complete config-converter-cli implementation

- Add all source files and tests
- Fix CI linting and type checking issues
- Ensure code passes ruff and mypy checks

config_converter/validators/schema.py

@@ -231,7 +231,7 @@ class SchemaValidator:
                 if prop.name in value:
                     prop_value = value[prop.name]
                     prop_props: List[SchemaProperty] = prop.properties if prop.properties else []
-                    prop_schema = InferredSchema(root_type=prop.type, properties=prop_props)  # type: ignore[arg-type]
+                    prop_schema = InferredSchema(root_type=prop.type, properties=prop_props)
                     self._validate_value(prop_value, prop_schema, prop_path, errors)
                 elif prop.required:
                     errors.append(f"{prop_path}: required property missing")
@@ -242,7 +242,7 @@ class SchemaValidator:
                 return False
             if isinstance(value, list) and schema.items:
                 item_props: List[SchemaProperty] = schema.items.properties if schema.items.properties else []
-                item_schema = InferredSchema(root_type=schema.items.type, properties=item_props)  # type: ignore[arg-type]
+                item_schema = InferredSchema(root_type=schema.items.type, properties=item_props)
                 for i, item in enumerate(value):
                     self._validate_value(item, item_schema, f"{path}[{i}]", errors)