add inspect_dag_group_run.py

csst_dag/cli/inspect_dag_group_run.py

+import sys
+import os
+
+dag_group_run_hash = sys.argv[1]
+
+assert len(dag_group_run_hash) == 40
+import joblib
+
+file_path = os.path.join(
+    os.getenv("HOME"),
+    "csst_dag",
+    f"{dag_group_run_hash}.joblib",
+)
+
+data = joblib.load(file_path)
+dag_group_run = data["dag_group_run"]
+dag_run_list = data["dag_run_list"]
+
+# print dag_group_run and dag_run_list
+print("`dag_group_run`:")
+print(f"  - {dag_group_run}")
+for dag_run in dag_run_list:
+    print(f"  - {dag_run}")