[MCH-318-157] feat: add a way for automated tokemak claims

[charlesndalton]

Description

For our tokemak strats, we need to call a special function to claim TOKE (this one). Ideally, we'd automate this, which isn't possible through the existing keep3r jobs. This is one idea on how to allow for this.

Essentially, we'd have a new type of job called a CalldataV2Keep3rJob where Yearn would be able to specify an approved function selector for a strategy. A keep3r would call function work(address _strategy, bytes calldata _callData), passing in the required calldata. In our case, the approved function selector would be the bytes4 equivalent of claimRewards, and keep3rs would be able to call claimRewards by passing in this information.

Since there is additional information required by the keep3r, we'd also need to add some docs on how they can get this calldata.

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