Update the dictionary and fix Dockerfile

• Use the dictionary from mekong-lang-data v0.1.0
• Fix Dockerfile
• Rename the dictionary file to chamkho_dict.txt

Updated dictionary and target library paths, and added macOS support

What's Changed

• Support building on Darwin and Docker by @scomma in #1

New Contributors

• @scomma made their first contribution in #1

Full Changelog: https://github.com/veer66/chamkho-pg/commits/v0.1.0