[2.0] Fix Tab Formating in ParserResult class, added doc-comments and fixed a missing variable initialization error for certain query special cases.

[2.0] Refactored SQL query building process and hydration. Hydration should now support result sets with any number of root components. Introducing ResultSetMapping that is used by hydration instead of queryComponents. This allows mapping of arbitrary SQL queries (NativeQuery).

DQL Parser work. Getting some first tests back running. Reorganizing all parser rules into the Parser itself.