Add client option to use the System.Text.Json Serializer instead of Newtonsoft ...

[bdcoder2]

When creating a Cosmos DB client, allow an option that will use the System.Text.Json serializer instead of Newtonsoft.

As per the StackOverflow question: https://stackoverflow.com/questions/78604777/why-is-azure-cosmosdb-saving-dictionary-object-values-as-valuekind-number.

Instead of incorporating code as per the answer given in the question above, provide a client option that automatically uses the System.Text.Json serializer, for example, an option such as:

UseSystemTextJson = true

When the option is true, the "Serializer" can be set internally using the code from: https://github.com/Azure/azure-cosmos-dotnet-v3/tree/master/Microsoft.Azure.Cosmos.Samples/Usage/SystemTextJson

This simple change would allow us to use the System.Text.Json serializer with the Cosmos SDK (v3) without having to manually incorporate the code above.

Thank-you for your consideration.

[bartelink]

See #4330 (I basically asked for this in https://github.com/Azure/azure-cosmos-dotnet-v3/issues/4325)

[Pilchie]

Duplicate of #4330