feat(plugin): add groypfi-groypad plugin

[Renryog]

Summary

Adds a new groypfi-groypad Teleton plugin to deploy, trade, and manage Groypad bonding-curve tokens on TON.

What’s included

• plugins/groypfi-groypad/index.js
  • SDK-based ESM plugin (tools(sdk)) with 7 tools:
    • groypad_deploy
    • groypad_list_tokens
    • groypad_token_info
    • groypad_get_quote
    • groypad_buy
    • groypad_sell
    • groypad_claim_fee
  • On-chain reads via TonCenter runGetMethod
  • Transaction building with @ton/core cells/opcodes
  • Action tools scoped to dm-only; categories set to action/data-bearing
• plugins/groypfi-groypad/manifest.json
  • Full plugin metadata and tool declarations
  • SDK requirement: >=1.0.0
  • Secrets declaration:
    • SUPABASE_ANON_KEY (required)
    • TONCENTER_API_KEY (optional)
• plugins/groypfi-groypad/README.md
  • Install instructions (WebUI + manual)
  • Secret setup and usage examples
  • Notes on Groypad/Uranus shared MemeFactory and Groypad memo identification

Notes

• Documentation and plugin addition only.
• No changes to existing plugins or core runtime behavior.