add upload_plan.py

csst_dag/cli/upload_plan.py

+from csst_dag import DFS
+from csst_dfs_client import plan
+import argparse
+import sys
+import os
+
+plan_path = sys.argv[1]
+assert os.path.exists(plan_path), f"Plan file {plan_path} does not exist"
+
+res = plan.write_file(local_file="plan.json")
+print(res)