Implementation of the {@linkplain org.apache.lucene.queryparser.classic Lucene classic query parser} using the flexible query parser frameworks

## Lucene Flexible Query Parser Implementation

The old Lucene query parser used to have only one class that performed all the parsing operations. In the new query parser structure, the parsing was divided in 3 steps: parsing (syntax), processing (semantic) and building.

The classes contained in the package org.apache.lucene.queryParser.standard are used to reproduce the same behavior as the old query parser.

Check {@link org.apache.lucene.queryparser.flexible.standard.StandardQueryParser} to quick start using the Lucene query parser.