chore: replace shortid with nanoid and modernize dependencies

[dambrisco]

Summary

This PR modernizes the project's dependencies and updates the codebase to use more modern alternatives. The main changes involve replacing the deprecated shortid library with nanoid, updating the CSV parsing library, and removing unnecessary middleware packages in favor of Express built-ins.

Key Changes

• ID Generation: Replaced all instances of shortid.generate() with nanoid() across 9 files (series, teams, admin_groups, banned_players, divisions, players, playoffSeries, registration, roles, and seasons)
• CSV Processing: Updated from json2csv v5 to @json2csv/plainjs v7 with new API (Parser class instead of parse function)
• Express Middleware: Replaced body-parser middleware with Express built-in express.json() and express.urlencoded() methods
• Type Definitions: Removed custom TypeScript declarations for redirect-https and json2csv (no longer needed with updated packages)
• Dependencies Removed:
  • shortid and @types/shortid
  • body-parser and @types/body-parser
  • bluebird and @types/bluebird
  • redirect-https
  • json2csv
• Dependencies Added:
  • @json2csv/plainjs (modern CSV parser)
  • nanoid (lightweight ID generator)

Implementation Details

• nanoid() is called without arguments, using default configuration (21-character URL-friendly IDs)
• CSV parsing updated to use the new Parser class constructor pattern with field configuration
• All ID generation calls are consistent across the codebase with the new nanoid() syntax

https://claude.ai/code/session_01XjQhFY22UkjDR9sBhbWWd4