The PKP Tool Registry contract instance.
The token ID of the PKP.
The Ethereum address of the delegatee.
The IPFS CID of the tool whose policy should be fetched.
A promise that resolves to the tool's policy configuration for the specified delegatee.
Fetches the policy for a specific tool and delegatee from the PKP Tool Registry. This function retrieves the policy configuration that defines how a delegatee can use a particular tool with a PKP.