Numerical range queries don't work when using lucene query syntax

[Shazwazza]

Ref: umbraco/Umbraco-CMS#6316

Turns out that the lucene query parser when dealing with range syntax only uses a TermRangeQuery which doesn't work when working on numerical fields. It's possible to override the method on the query parser to actually deal with this and if we can detect the field type being requested (should be possible) then we can return a NumericRangeQuery and this will work.

For further details on how to fix see https://our.umbraco.com/forum/using-umbraco-and-getting-started/100637-raw-lucene-date-range-query-not-working-in-examine-umbraco-8#comment-315684

Will need a unit test for this one too.