Add operator_args full_refresh as a templated field (#623)

This allows you to fully refresh a model from the console.
Full-refresh/backfill is a common task. Using Airflow parameters makes
this easy. Without this, you'd have to trigger an entire deployment. In our
setup, company analysts manage their models without modifying
the DAG code. This empowers such users.

Example of usage:
```python
with DAG(
        dag_id="jaffle",
        params={"full_refresh": Param(default=False, type="boolean")},
        render_template_as_native_obj=True
):
    task = DbtTaskGroup(
        operator_args={"full_refresh": "{{ params.get('full_refresh') }}", "install_deps": True},
    )

```

Closes: #151

cosmos/operators/local.py

@@ -397,6 +397,8 @@ class DbtSeedLocalOperator(DbtLocalBaseOperator):
 
     ui_color = "#F58D7E"
 
+    template_fields: Sequence[str] = DbtBaseOperator.template_fields + ("full_refresh",)  # type: ignore[operator]
+
     def __init__(self, full_refresh: bool = False, **kwargs: Any) -> None:
         self.full_refresh = full_refresh
         super().__init__(**kwargs)
@@ -434,6 +436,7 @@ class DbtRunLocalOperator(DbtLocalBaseOperator):
 
     ui_color = "#7352BA"
     ui_fgcolor = "#F4F2FC"
+    template_fields: Sequence[str] = DbtBaseOperator.template_fields + ("full_refresh",)  # type: ignore[operator]
 
     def __init__(self, full_refresh: bool = False, **kwargs: Any) -> None:
         self.full_refresh = full_refresh

tests/operators/test_local.py

@@ -420,6 +420,19 @@ def test_calculate_openlineage_events_completes_openlineage_errors(mock_processo
     assert err_msg in caplog.text
 
 
+@pytest.mark.parametrize(
+    "operator_class,expected_template",
+    [
+        (DbtSeedLocalOperator, ("env", "vars", "full_refresh")),
+        (DbtRunLocalOperator, ("env", "vars", "full_refresh")),
+    ],
+)
+def test_dbt_base_operator_template_fields(operator_class, expected_template):
+    # Check if value of template fields is what we expect for the operators we're validating
+    dbt_base_operator = operator_class(profile_config=profile_config, task_id="my-task", project_dir="my/dir")
+    assert dbt_base_operator.template_fields == expected_template
+
+
 @patch.object(DbtDocsGCSLocalOperator, "required_files", ["file1", "file2"])
 def test_dbt_docs_gcs_local_operator():
     mock_gcs = MagicMock()