### Description

- Implements `IServiceManager` for the `ECDSAServiceManagerBase` which
has a single quorum
- `HyperlaneServiceManager` (HSM), the main AVS contract for
registering/deregistering operators and enrolling/unenrolling into
challengers
- the HSM has a mutable slasher so that once the EL slasher is live, we
can set it for your AVS too to enable freezing operators.
- EnumerableMapEnrollment for a enumerable map of enrollment statuses
for each operator and challenger

Update: I switched the ECDSAServiceManager i had written earlier to
steven's PR here:
Layr-Labs/eigenlayer-middleware#234. The
differences are:
 - events for (de)registering

Notes

- `hardhat yarn` tries looking for all imports (including the ones from
submodules) as npm libraries , eg. @eigenlayer/core.

### Drive-by changes

- none

### Related issues

- fixes #3590,

### Backward compatibility

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### Testing

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