feat(contracts): integrate BoltChallenger in BoltManager

[merklefruit]

Task

As outlined in this comment:

bolt/bolt-contracts/src/contracts/BoltSymbioticMiddleware.sol

Line 376 in ce4b85b

// TODO: remove onlyOwner modifier and gate the slashing logic behind the BoltChallenger

We need to integrate the challenger logic to gate slashing requests.

Context

Slashing requests are currently gated behind an onlyOwner function. To remove this permissioned requirement,
we need to use the challenger as oracle for slashing requests. This is essentially a way to determine if the
slashing request is legit and should be executed or not.

The way we do this is by reading from the challenger's storage to see if a breached challenge occurred.