Bug Fix: OData $skip and $select

Add support for aggressively flattening nested queries to allow query execution to work on queries generated by Web Api OData.

The following sample query would be produced by OData:

from ODataPackage <generated>_8 in {
  from SampleDocument p in value(Lucene.Net.Linq.LuceneQueryable`1[SampleDocument])
    orderby [p].Id asc, [p].Version asc select [p] => Skip(20)
  }
  select new SelectSome`1() {
    ModelID = "451afd8f-5957-4c03-99a5-8a81bf81a591",
    Container = new AutoSelectedNamedPropertyWithNext`1() {
      Name = "Version",
      Value = [<generated>_8].Version,
      Next = new NamedProperty`1() {
        Name = "Id",
        Value = [<generated>_8].Id
      }
    }
  } => Take(21)

These queries will now be flattened to remove the nesting.

Binaries

NuGet package at https://www.nuget.org/packages/Lucene.Net.Linq/3.3.4

PM> Install-Package Lucene.Net.Linq -Version 3.3.4