Fix parquetjs package import

[shanghaikid]

Summary

• replace the parquet dependency alias with the real @shanghaikid/parquetjs package name
• update ParquetFormatter imports, tests, and docs to use @shanghaikid/parquetjs
• bump package version to 3.0.3 for release

Verification

• yarn build
• yarn test test/bulkwriter/ParquetFormatter.spec.ts --runInBand
• npm_config_cache=/private/tmp/npm-cache-attu-sdk npm pack --dry-run --json

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: shanghaikid

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.53%. Comparing base (2770c38) to head (6b80e15).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #574   +/-   ##
=======================================
  Coverage   97.53%   97.53%           
=======================================
  Files          63       63           
  Lines        5023     5023           
  Branches     1476     1476           
=======================================
  Hits         4899     4899           
  Misses        119      119           
  Partials        5        5           

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