Include functionality for adding and removing directories from the PATH environment variable on Windows.

Proposed Changes:

Add-Path Function:
    Create a function (Add-Path) to add a specified directory to the PATH environment variable.

Remove-Path Function:
    Create a function (Remove-Path) to remove a specified directory from the PATH environment variable.

User Interface:
    Provide a simple and intuitive command-line interface for users to interact with the Add-Path and Remove-Path functions.

Usage Examples:
    Include documentation and usage examples to guide users on how to leverage the new functionality.

Testing:
    Ensure thorough testing to validate the correct modification of the PATH variable.
    Check for potential edge cases and handle errors gracefully.

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