[js][bidi] Script Module Add/Remove preload script command

[TamsilAmani]

Description

This PR adds the BiDi script module commands for Add and Remove preload script.
Corresponding tests for all the functions are written. The code for the 'arguments' parameter and its test will be done later.

Motivation and Context

#11979

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• I have read the contributing document.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

[harsha509]

js checks looks good to me!