feat: consolidate contract integrations and access control

[software321dev]

Description

This pull request consolidates the implementation of several core contract features for the SoroTask platform. These enhancements provide granular access control, keeper reputation tracking, advanced execution capabilities via flash loans, and cross-chain interoperability.

Changes Included:

• Granular Access Control & Delegation: Built a robust role-based access control system within the smart contract, enabling users to securely delegate specific task management permissions to other addresses.
• On-Chain Keeper Reputation Tracking: Developed a system to record successful and failed executions directly on-chain, automatically updating a public reputation score for each keeper.
• Flash Loan Integration for Task Execution: Designed and integrated specialized interfaces allowing tasks to safely utilize flash loans during their execution phase, ensuring debts are settled before the transaction completes.
• Cross-Chain Messaging Interfaces: Implemented standard interfaces compatible with bridges (e.g., Axelar or LayerZero) to empower tasks on Soroban to trigger cross-chain actions and messaging.

Related Issues

Closes #465
Closes #466
Closes #467
Closes #468

[ayomideadeniran]

Pr under review

[drips-wave]

@software321dev Great news! 🎉 Based on an automated assessment of this PR, the linked Wave issue(s) no longer count against your application limits.

You can now already apply to more issues while waiting for a review of this PR. Keep up the great work! 🚀

Learn more about application limits