Skills : CARV D.A.T.A framework integration

[yornfifty]

Description

This PR introduces a new skills/carv/ package, integrating CARV API functionalities. These skills enable agents to access real-time blockchain data (on-chain queries for ETH, BASE, BTC, SOL), cryptocurrency token information (details, pricing), and relevant news.

CARV already released its token $CARV
so this integration will add another ambassador/token in the market

Key Additions

• skills/carv/ directory:
  • base.py: CarvBaseTool for common API logic.
  • fetch_news.py: Tool to retrieve crypto news.
  • onchain_query.py: Tool for natural language blockchain queries.
  • token_info_and_price.py: Tool for token details and pricing.
  • __init__.py: Skill loading and factory.
  • schema.json: Configuration schema for API keys and skill states.
  • README.md: Documentation for the CARV skills.
  • carv.webp: Skill icon.

Functionality

• News Fetching: Get latest crypto news.
• On-Chain Queries: Ask natural language questions about supported blockchains.
• Token Info & Price: Retrieve details and current USD prices for tokens, with optional value calculation for specific amounts.

Type of Change

• Bugfix
• New Feature
• Improvement
• Documentation Update

Checklist

• I have read the contributing guidelines.
• I have added tests to cover my changes.
• All new and existing tests passed.

Related Issue

Closes #620

Screenshots

calling 2 related tools to fullfil user question

1. called onchain_query to get the biggest transaction in the last 24 hour in ethereum
2. called token_info_and_price to get the token price and doing some internal math to calculate the token value for x amount
   

getting news