Add EntityFramework support to Linq provider

**Context**

It would be great if it was possible to use this driver with EntityFramework it would allow existing EntityFramework users to get into using RethinkDb

**Alternatives**

No

**Has the feature been requested before?**

No

**If the feature request is approved, would you be willing to submit a PR?**

Yes, I can add this feature once the Linq provider supports all the use cases I can think of

The request concerns adding Entity Framework support to the LINQ provider. Start by reviewing the existing LINQ provider and the requirements for Entity Framework integration; done would mean existing Entity Framework users can use the driver, but the required use cases and implementation scope are not specified.

Written by the indexing model from the issue text.