Fix empty tag in case of custom parser (#1100)

## Description
As of version 1.5.1, using a custom parser to parse a dbt project
hardcodes the tags value to an empty list [] when initializing 
the DbtNode object. This creates issues for users utilizing 
the select option in the DAG with render_config, 
resulting in distorted DAG rendering, as shown below.

<img width="1435" alt="Screenshot 2024-07-16 at 10 51 00 PM"
src="https://github.com/user-attachments/assets/f6da8ce0-cd80-479f-a0ad-a537a5f2c776">

This PR parses the tag values from the project and uses them to
initialize the DbtNode object. Post this change rendering appears like
<img width="1473" alt="Screenshot 2024-07-17 at 7 01 53 PM"
src="https://github.com/user-attachments/assets/8d15d4f0-7e4d-4808-b00d-2ac3286db5a9">


## Related Issue(s)

closes: #943 
closes: #693

## Breaking Change?

No

## Checklist

- [x] I have made corresponding changes to the documentation (if
required)
- [x] I have added tests that prove my fix is effective or that my
feature works

cosmos/dbt/graph.py

@@ -545,6 +545,7 @@ def load_via_custom_parser(self) -> None:
         )
         for model_name, model in models:
             config = {item.split(":")[0]: item.split(":")[-1] for item in model.config.config_selectors}
+            tags = [selector for selector in model.config.config_selectors if selector.startswith("tags:")]
             node = DbtNode(
                 unique_id=f"{model.type.value}.{self.project.project_name}.{model_name}",
                 resource_type=DbtResourceType(model.type.value),
@@ -554,7 +555,7 @@ def load_via_custom_parser(self) -> None:
                         self.render_config.project_path.as_posix(), self.execution_config.project_path.as_posix()
                     )
                 ),
-                tags=[],
+                tags=tags or [],
                 config=config,
             )
             nodes[model_name] = node

dev/dags/dbt/jaffle_shop/models/customers.sql

@@ -1,3 +1,5 @@
+{{ config(tags=["customers"]) }}
+
 with customers as (
 
     select * from {{ ref('stg_customers') }}

tests/dbt/parser/test_project.py

@@ -133,8 +133,8 @@ def test_dbtmodelconfig___repr__():
     dbt_model = DbtModel(name="some_name", type=DbtModelType.DBT_MODEL, path=SAMPLE_MODEL_SQL_PATH)
     expected_start = (
         "DbtModel(name='some_name', type='DbtModelType.DBT_MODEL', "
-        "path='dev/dags/dbt/jaffle_shop/models/customers.sql', config=DbtModelConfig(config_selectors=set(), "
-        "upstream_models={'stg_"
+        "path='dev/dags/dbt/jaffle_shop/models/customers.sql', config=DbtModelConfig("
+        "config_selectors={'tags:customers'}, upstream_models={'stg_"
     )
     assert str(dbt_model).startswith(expected_start)
 

tests/dbt/test_graph.py

@@ -813,6 +813,32 @@ def test_load_via_load_via_custom_parser(project_name):
     assert len(dbt_graph.nodes) == 28
 
 
+def test_load_via_load_via_custom_parser_select_rendering_config():
+    project_config = ProjectConfig(dbt_project_path=DBT_PROJECTS_ROOT_DIR / "jaffle_shop")
+    execution_config = ExecutionConfig(dbt_project_path=DBT_PROJECTS_ROOT_DIR / DBT_PROJECT_NAME)
+    render_config = RenderConfig(dbt_project_path=DBT_PROJECTS_ROOT_DIR / DBT_PROJECT_NAME, select=["customers"])
+    profile_config = ProfileConfig(
+        profile_name="test",
+        target_name="test",
+        profiles_yml_filepath=DBT_PROJECTS_ROOT_DIR / DBT_PROJECT_NAME / "profiles.yml",
+    )
+    dbt_graph = DbtGraph(
+        project=project_config,
+        profile_config=profile_config,
+        render_config=render_config,
+        execution_config=execution_config,
+    )
+
+    dbt_graph.load_via_custom_parser()
+
+    assert len(dbt_graph.filtered_nodes) == 1
+    for model_name in dbt_graph.filtered_nodes:
+        assert model_name == "customers"
+        filter_node = dbt_graph.filtered_nodes.get(model_name)
+        assert filter_node.file_path == DBT_PROJECTS_ROOT_DIR / "jaffle_shop/models/customers.sql"
+        assert filter_node.tags == ["tags:customers"]
+
+
 @patch("cosmos.dbt.graph.DbtGraph.update_node_dependency", return_value=None)
 def test_update_node_dependency_called(mock_update_node_dependency):
     project_config = ProjectConfig(
@@ -1387,9 +1413,9 @@ def test_save_dbt_ls_cache(mock_variable_set, mock_datetime, tmp_dbt_project_dir
     hash_dir, hash_args = version.split(",")
     assert hash_args == "d41d8cd98f00b204e9800998ecf8427e"
     if sys.platform == "darwin":
-        assert hash_dir == "cdc6f0bec00f4edc616f3aa755a34330"
+        assert hash_dir == "465fc0735d8bef08a0d375b2315069bb"
     else:
-        assert hash_dir == "77d08d6da374330ac1b49438ff2873f7"
+        assert hash_dir == "6c662da10b64a8390c469c884af88321"
 
 
 @pytest.mark.integration