Add support for creation of anonymous types in a `Select` expression.

[sflanker]

See test cases:

Invio.QueryProvider.MySql/test/Invio.QueryProvider.MySql.Test/MySqlQueryableTest.cs

Lines 120 to 130 in 03146ab

	[Fact(Skip = "TODO: Not Supported")]
	public override void Select_AnonymousType_Complex() {
	}
	[Fact(Skip = "TODO: Not Supported")]
	public override void Select_AnonymousType_Composite() {
	}
	[Fact(Skip = "TODO: Not Supported")]
	public override void Select_AnonymousType_Simple() {
	}