Support DateTimeBin in LINQ

[onionhammer]

Is your feature request related to a problem? Please describe.
DateTimeBin is a datetime function in Cosmos: https://learn.microsoft.com/en-us/azure/cosmos-db/nosql/query/datetimebin

Describe the solution you'd like
Add DateTimeBin to CosmosLinqExtensions.

Describe alternatives you've considered
Building raw queries

I am open to submitting another PR for this, if I can get a project member to sponsor that they will help shepherd it through the PR process.

[adityasa]

@onionhammer I will be happy to review this for you. Thanks!

[onionhammer]

@adityasa cool, I will try to start working on a PR in the next week or two

[onionhammer]

@adityasa It looks like GroupBy support still isn't in-place for this SDK... not sure how useful DateTimeBins are without GroupBy support. I think we should put this on hold for the time being. GroupBy is far more critical to support, and is still a huge gap in this library.

See #1202