feat: Consolidate Contract Features for TWAP, Escrow, Resolver, and Simulation

[bitcoindev817-hue]

Description

This PR introduces critical core contract features that enhance pricing mechanisms, secure fund management, improve protocol flexibility, and allow for better execution estimations.

Features Implemented

• Time-Weighted Average Price (TWAP) Oracle: Implemented an on-chain TWAP oracle to ensure manipulation-resistant price feeds for task execution and token conversions.
• Automated Refund and Escrow Mechanism: Developed a secure escrow and automated refund system to seamlessly handle failed executions and protect user funds.
• Extensible Resolver Interface Protocol: Designed a flexible resolver protocol to allow developers to build custom and extensible logic for condition evaluation.
• On-Chain Execution Simulation Endpoint: Created an endpoint for simulating task executions on-chain, enabling accurate cost estimation and preventing unnecessary gas expenditure on failing tasks.

Related Issues

Closes #469
Closes #470
Closes #471
Closes #473