✨ Implement Update Fee(s) Mechanism

[mariocao]

✨ Feature

Implement a mechanism to allow updating fees dynamically for posting requests, results, or batches.

Motivation

This feature ensures flexibility in adjusting fees based on network conditions, usage patterns, or protocol changes.

Implementation

• Add logic to update fees for:
  • Posting requests.
  • Posting results.
  • Posting batches.
• Ensure only authorized roles can update fees.
• Emit relevant events when fees are updated.
• Update or extend interfaces as needed.