Create comprehensive wire crimping best practices document

[jasondaming]

Summary

Creates a new comprehensive document covering wire crimping best practices, with a focus on Anderson Powerpole connectors commonly used in FRC.

Changes

• New file: crimping-best-practices.rst with detailed crimping guidance
• Covers why proper crimping matters and common failure modes
• Documents required tools (ratcheting vs manual crimpers)
• Step-by-step instructions for 15, 30, and 45 amp Powerpole contacts
• Contact insertion techniques and pull testing
• Quality control procedures and inspection checklists
• Troubleshooting guide for common crimping problems
• Practice recommendations and competition preparation
• Added to Hardware Basics section index

Key Topics Covered

• Tool recommendations (TRIcrimp, IWISS, Anderson 1309G3)
• Wire preparation and strip lengths
• Proper crimping orientation and technique
• Contact seating and verification
• Quality control through visual, mechanical, and electrical testing
• Other connector types (ferrules, ring terminals, wire-to-board)
• Competition readiness checklist

Fixes #1263