Trino integration / limit operator / JSON :: access array elements

(*) adding limit-operator per data-source : each data-source needs different handling of the limit operator
(*) JSON reader is able to access array elements, these array-values may be nested and reside in an object or in an array.
(*) integration of Trino with RGW/s3select : upon push-down into Ceph the Trino-engine does some conversion to the SQL statements, this should be handled by the s3select-engine. the RGW response size creates HIVE_CURSOR_ERROR, thus it needs adjustments.

JSON first release, CSV new parser

-- JSON initial commits
-- better perform CSV parser
-- performance improvements for star-operation and scratch-area
-- bug fixes (when-case)