Add parseQueryReplacePlus function

[steve-chavez]

Currently the parseQuery function uses urlDecode True which converts + to space, my understanding is that this is desirable when having a x-www-form-urlencoded payload but not on every case, in particular for PostgREST we would like to be able to have an expression in the querystring that makes + meaningful.

This adds a new function(to preserve backward compatibility) that allows to set the urlDecode mode.