Improve Pipeline Support of Document Functions

[PlagueHO]

Improve the pipeline support of the database functions to accept Collection pipeline parameter in New-CosmosDbDocument, Set-CosmosDbDocument, Get-CosmosDbDocument and Remove-CosmosDbDocument.

Improve the pipeline support of the database functions to accept Document pipeline parameter in Set-CosmosDbDocument, Get-CosmosDbDocument and Remove-CosmosDbDocument.