Azure-cosmos-dotnet-v3: Preserve some of the way creating a query worked in v2

[crhistianramirez]

I liked how CreateDocumentQuery worked in v2. It returned an IQueryable so you could have one function that built up part of the query and pass it on to some other function that added to that query before executing it. It also let us use linq methods to build up the query.

Was it removed for performance reasons? Is there any way to retain some of the spirit of how it worked?

[kirankumarkolli]

@crhistianramirez we are exploring ways of enabling LINQ query generation. Its part of GA plan.

[j82w]

Closing this since it's a duplicate of #212