✨ Feature Request: Implement Token Paymaster Integration

[joepegler]

Feature or Improvement Description

Create a new token paymaster client that allows users to pay for gas fees using ERC20 tokens. This will complement the existing Bico Paymaster implementation with token-based gas fee payment capabilities.

Benefits & Outcomes

• Token Payment Support: Enable users to pay gas fees with ERC20 tokens
• Flexibility: Provide alternative payment options beyond native token and sponsorship
• DeFi Integration: Better support for DeFi applications where users hold tokens
• User Experience: Allow users to stay within their preferred token ecosystem
• Market Demand: Meet growing demand for token-based gas payment solutions

Implementation Ideas

1. Create Token Paymaster Client

   • Create new createTokenPaymasterClient.ts
   • Define token paymaster types and interfaces
   • Implement token approval handling
   • Add gas price conversion logic
   • Handle token price feeds

2. Token Paymaster Features

   • Token price oracle integration
   • Gas price estimation in tokens
   • Token allowance management
   • Multiple token support
   • Price feed fallback mechanisms

3. Configuration Options

   • Token address configuration
   • Price feed sources
   • Slippage tolerance
   • Gas price buffer
   • Fallback options

4. **Testing

Any References?

No response

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