Created ManualControl Class for easy testing

[BolunDai0216]

Description

Change the manual control script to include a ManualControl class which can be easily used with unregistered environments.

Type of change

• New feature (non-breaking change which adds functionality)

Checklist:

• I have run the pre-commit checks with pre-commit run --all-files (see CONTRIBUTING.md instructions to set it up)
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[pseudo-rnd-thoughts]

If this is functionally identical to the old version that is good with me

[BolunDai0216]

If this is functionally identical to the old version that is good with me

I just wrapped manual control functionalities of the previous code into a class, and moved the command line argument parser into the main function.