✨ Feature Request: Implement Token Paymaster Integration

### 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_

### Code of Conduct

- [x] I agree to follow this project's Code of Conduct.