Improve dataflow submodule to pass all test cases

[Unparalleled-Calvin]

• Implement branches of Ravlue to support most cases.
• Rename clean.sh to batch.sh and support more automatic processing.
  • batch.sh is supposed to run cargo clean
  • batch.sh rap -uaf is supposed to run cargo rap -uaf for all projects and stops if fails.

Now the dataflow submodule can support all test cases. Run batch.sh rap -dataflow to test it.