Exec working dir

[Mayyhem]

Description

Added -dir,--working-dir option to exec and added -mp back to invoke to reduce confusion for client-push

Type of Change

• 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 not work as expected)

Testing

• Tested against v2203

Bonus Points:

• I have commented my code, particularly in hard-to-understand areas
• I have incremented the build/revision number in https://github.com/Mayyhem/SharpSCCM/blob/main/Properties/AssemblyInfo.cs
• I have made corresponding changes to the Wiki and RELEASE_NOTES.md
• I have added unit tests that prove my fix is effective or that my feature works