Add "Force" param to Remove-VMHostStaticIScsiTargets

[hfanan]

This PR closes #

The changes in this PR are as follows:

• Add "Force" param to Remove-VMHostStaticIScsiTargets that will skip cheking if the iSCSI target is in use
• ...
• ...

I have read the contributor guidelines and have completed the following:

• Formatted the code using VSCode default formatter for PowerShell.
• Tested the code end-to-end against an SDDC.
  Tested using on-premise instance
• Documented the functions using standard PowerShell markup and applied AVSAttribute to newly exported functions.