Update LSP12 Issued Assets Scripts

[fhildeb]

Maintenance

• Updates ERC725.js to have dynamic array encoding
• Updates RPC endpoints to Thirdweb as introduced in Update RPCs from GatewayFM to Thirdweb #55

Features

• Updates scripts to use .env variables instead of plain script constants
• Adds LSP12 script to dynamically add, remove, or update assets

Tests

✅ LSP12 Registration
✅ LSP12 Updates: Add new addresses to the list/map
✅ LSP12 Updates: Add existing addresses - will skip already existing ones

[YamenMerhi]

Will takeover

[CJ42]

nice cleanup 👌🏻