Introduce Licensing Hook for Limiting Total License Tokens

[kingster-will]

Summary

This PR introduces a new Licensing Hook, TotalLicenseTokenLimitHook, which allows IP owners to set a limit on the total number of license tokens that can be minted from specific license terms of an IP. This feature ensures that the minting of license tokens is controlled and adheres to the predefined limits set by the IP owner.

Key Features

• Set Total License Token Limit: IP owners can specify the maximum number of license tokens that can be minted for a given license template and terms.
• Minting Fee Calculation: The hook calculates the minting fee based on the license template and terms.
• Validation: The hook validates the total supply of license tokens before allowing new tokens to be minted, ensuring the limit is not exceeded.
• Revert on Exceeding Limit: If the minting request exceeds the set limit, the transaction is reverted with a TotalLicenseTokenLimitExceeded error.

Changes

• Added TotalLicenseTokenLimitHook contract with the following key functions:
  • beforeRegisterDerivative: Checks the total token limit before registering a derivative.
  • calculateMintingFee: Calculates the minting fee for license tokens.
  • getTotalLicenseTokenLimit: Retrieves the total license token limit for a specific license.
  • _checkTotalTokenLimit: Internal function to check if the total token limit is exceeded.
  • _calculateFee: Internal function to calculate the minting fee.
• Added tests in TotalLicenseTokenLimitHookTest to ensure the functionality works as expected:
  • test_TotalLicenseTokenLimitHook_setLimit: Tests setting and enforcing the total license token limit.
  • test_TotalLicenseTokenLimitHook_revert_nonIpOwner_setLimit: Tests that only the IP owner can set the limit.

Usage

1. Set Licensing Config: IP owners set the licensing configuration using the LicensingModule.
2. Set Token Limit: IP owners set the total license token limit using the setTotalLicenseTokenLimit function.
3. Mint License Tokens: The system checks the limit before minting new license tokens to ensure compliance.

[sebsadface]

Added some comments that can be addressed in a future PR. Overall LGTM :)