Update Export functionality to support multiple authentication methods

[ykuijs]

Pull Request (PR) description

This PR adds the ability to the Export to support providing multiple authentication methods. The code then selects the most secure method supported by each resource.

This Pull Request (PR) fixes the following issues

• Fixes Generated export command excludes resources #1759
• Fixes The permissions needed for using application id/certificate authentication on Export-M365DSCConfiguration with Power Platform workload is unknown #1979
• Fixes The authentication method on Export-M365DSCConfiguration with Planner has issues and not documented correctly #2032
• Fixes Export-M365DSCConfiguration fails in a not elevated PowerShell session. #2037
• Fixes [TeamsMeetingBroadcastConfiguration] Export creates a string of the variable for parameter SdnApiToken, which then fails during deployment #2056

[ykuijs]

@NikCharlebois, ready for another review!

[NikCharlebois]

Since Planner is using Microsoft Graph, it should also support Service Principal like the other Graph based module, isn't it the case?

[ykuijs]

Even though it uses the Graph, it strangely only supports Credentials. This was your conclusion as well here 😉:
"After further investigation, while the PowerApps module accepts ApplicationId/TenantId/Thumbprint/secret, it does not support authenticating with it. Please ensure you connect using Credentials for the Power Platform resources. We will be updating documentation and removing the parameters."