Simplify export of complex properties

[FabienTschanz]

Pull Request (PR) description

This PR updates the entire export logic of all resources:

• Removes all calls to Update-M365DSCExportAuthenticationResults in the resources and adds it to Get-M365DSCExportContentForResource
• Updates all logic that includes CIM instance conversion to be done inside of Microsoft365DSC and not by ReverseDSC
• Removes all calls to Convert-DSCStringParamToVariable except for FabricAdminTenantSettings --> @NikCharlebois Can you check if it still works and / or guide me to a resolution if it doesn't?

This Pull Request (PR) fixes the following issues

• None

Task list

• Added an entry to the change log under the Unreleased section of the file CHANGELOG.md.
  Entry should say what was changed and how that affects users (if applicable), and
  reference the issue being resolved (if applicable).
• Resource parameter descriptions added/updated in the schema.mof.
• Resource documentation added/updated in README.md.
• Resource settings.json file contains all required permissions.
• Examples appropriately added/updated.
• Unit tests added/updated.
• New/changed code adheres to DSC Community Style Guidelines.

[NikCharlebois]

@FabienTschanz let's address the Fabric setting offline.