Add null pages and boundary order (Fixes #92)

[wilwade]

Problem

Parquet file column indexes are required to have null_pages and boundary_order, but they were missing from Parquetjs generated files.

https://github.com/apache/parquet-format/blob/1603152f8991809e8ad29659dffa224b4284f31b/src/main/thrift/parquet.thrift#L955

Closes #92

Solution

Note: While required, the requirement is not always a hard requirement depending on the library.

Steps to Verify:

1. Checkout the branch
2. npm i && npm run build && npm pack
3. Install parquet cli tools (macOS brew: brew install parquet-cli)
4. Checkout the bug repo from Missing column index information in generated parquet file #92 https://github.com/noxify/parquetjs_bug/
5. cd parquetjs_bug/parquetjs && npm i
6. node index.js && parquet column-index ../generated_files/parquetjs/change.parque will FAIL
7. npm i ../parquetjs/dsnp-parquetjs-0.0.0.tgz
   8 node index.js && parquet column-index ../generated_files/parquetjs/change.parque will PASS!

[enddynayn]

👍 great!

[noxify]

awesome - will test it tomorrow.

[shannonwells]

Works for me!