Add Indonesian (id) locale support

[justpiple]

Description

This Pull Request introduces Indonesian (id) localization support. It enables the library to parse time durations written in Indonesian and adheres to Indonesian numeric formatting standards.

Key Changes

• Created locale/id.js containing Indonesian time units and common abbreviations.
• Added support for Indonesian-specific units:
  • tahun, thn (year)
  • bulan, bln (month)
  • minggu, mgg (week)
  • hari, hr (day)
  • jam, j (hour)
  • menit, mnt (minute)
  • detik, dtk, det (second)
• Configured Indonesian numeric separators:
  • group: . (e.g., 1.000 for thousands)
  • decimal: , (e.g., 1,5 for decimals)

Checklist

• Inherits from en.js to maintain backward compatibility with English units.
• Includes common Indonesian abbreviations used in daily communication.
• Follows the project's existing locale structure and logic.