pattern: Add parquet.hexpat for Apache Parquet data file (#450)

* Add parquet.hexpat for Apache Parquet data file

> Apache Parquet is an open source, column-oriented data file format designed for efficient data storage and retrieval.
> -- https://parquet.apache.org

* Add parquet.hexpat test file

* Fix parquet.hexpat boolean parsing

* Fix parquet.hexpat ColumnChunkPlacer not placing last chunk

* Fix parquet.hexpat using VarInt = LEB128

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Co-authored-by: Nik <werwolv98@gmail.com>

Author: furidosu