feat: use proper interfaces

[gosuto-inzasheru]

i know this is a stupid optimisation but i wanted to get it right...

but it doesnt look like gnosispay/account-kit#38 actually solves our problem

[gosuto-inzasheru]

Compiler run failed:
Error (9553): Invalid type for argument in function call. Invalid implicit conversion from enum Enum.Operation to IDelayModifier.Operation requested.
   --> src/RoboSaverVirtualModule.sol:299:92:
    |
299 |         delayModule.execTransactionFromModule(address(BALANCER_VAULT), 0, exitPoolPayload, Enum.Operation.Call);
    |                                                                                            ^^^^^^^^^^^^^^^^^^^

Error (9553): Invalid type for argument in function call. Invalid implicit conversion from enum Enum.Operation to IDelayModifier.Operation requested.
   --> src/RoboSaverVirtualModule.sol:326:92:
    |
326 |         delayModule.execTransactionFromModule(address(BALANCER_VAULT), 0, exitPoolPayload, Enum.Operation.Call);
    |                                                                                            ^^^^^^^^^^^^^^^^^^^

Error (9553): Invalid type for argument in function call. Invalid implicit conversion from enum Enum.Operation to IDelayModifier.Operation requested.
   --> src/RoboSaverVirtualModule.sol:367:80:
    |
367 |         delayModule.execTransactionFromModule(MULTICALL3, 0, multicallPayload, Enum.Operation.DelegateCall);
    |                                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^

Error (9553): Invalid type for argument in function call. Invalid implicit conversion from enum Enum.Operation to IDelayModifier.Operation requested.
   --> src/RoboSaverVirtualModule.sol:383:73:
    |
383 |         delayModule.executeNextTx(cachedTarget, 0, txQueueData.payload, operation);
    |                                                                         ^^^^^^^^^

Error: 
Compilation failed

[gosuto-inzasheru]

i opened foundry-rs/foundry#8379

[gosuto-inzasheru]

not possible to programmatically create interfaces that preserve enums