Improve on how files are generated for data collection

[arudell]

Description

Summary of changes:
This pull request includes several changes to the Export-ObjectToFile calls in various PowerShell scripts to standardize the file type and format parameters. The most important changes include removing the Name parameter where it was previously used and ensuring the Force parameter is applied where necessary.

Standardization of Export-ObjectToFile calls:

• src/modules/SdnDiag.Common.psm1: Removed the Name parameter from Export-ObjectToFile calls and ensured the Force parameter is used where needed.
• src/modules/SdnDiag.Gateway.psm1: Removed the Name parameter from Export-ObjectToFile calls and corrected a missing hyphen in one of the calls.
• src/modules/SdnDiag.LoadBalancerMux.psm1: Changed the file type from json to txt and format to List for all Export-ObjectToFile calls.

Change type

• Bug fix (non-breaking change)
• Code style update (formatting, local variables)
• New Feature (non-breaking change that adds new functionality without impacting existing)
• Breaking change (fix or feature that may cause functionality impact)
• Other

Checklist:

• My code follows the style and contribution guidelines of this project.
• I have tested and validated my code changes.