feat: Add operator set support for ECDSA stake registry

[jaxxjj]

Motivation:

With the slashing release upcoming, the current ECDSAStakeRegistry has not yet been updated to support operator sets. The system currently only supports M2 quorum registration, creating a need for a more flexible and comprehensive registration mechanism while maintaining backward compatibility.

Modifications:

ECDSAStakeRegistry

• Renamed registration functions:
  • registerOperatorWithSignature → registerOperatorM2Quorum
  • deregisterOperator → deregisterOperatorM2Quorum
• Added operator set callbacks:
  • onOperatorSetRegistered - handles AllocationManager registration
  • onOperatorSetDeregistered - handles AllocationManager deregistration
• Added operator set management:
  • getCurrentOperatorSetIds - retrieves current operator set IDs
  • getQuorumWeight - calculates quorum weight
  • getOperatorSetWeight - calculates operator set weight
  • operatorRegisteredOnAVSDirectory - checks M2 quorum registration
  • operatorRegisteredOnCurrentOperatorSets - checks operator set registration
  • operatorRegistered - checks either registration type
  • disableM2QuorumRegistration - disables new M2 registrations
  • updateOperatorSetsConfig - updates operator set strategy parameters

ECDSAAVSRegistrar

• Added AllocationManager integration:
  • registerOperator - handles operator registration
  • deregisterOperator - handles operator deregistration
  • supportsAVS - checks AVS support

ECDSAServiceManagerBase

• Added IServiceManager implementations:
  • deregisterOperatorFromOperatorSets
  • addPendingAdmin
  • removePendingAdmin
  • removeAdmin
  • setAppointee
  • removeAppointee
• Added operator set support:
  • getOperatorSetStrategies - retrieves strategies for an operator set

New Implementations

• Added ECDSAStakeRegistryRatioWeight with configurable weight ratios
• Updated ECDSAStakeRegistryPermissioned with new ejection logic

Test Updates

• Updated existing test files:

  • ECDSAStakeRegistryUnit.t.sol
  • ECDSAStakeRegistryPermissionedUnit.t.sol
  • ECDSAStakeRegistryEqualWeightUnit.t.sol
  • ECDSAServiceManager.t.sol

• Added new test file:

  • ECDSAStakeRegistryRatioWeightUnit.t.sol - tests for configurable weight ratios between M2 quorum and operator sets

Result:

The refactored ECDSAStakeRegistry now supports both operator sets and legacy M2 quorum registrations, providing a robust dual-registration system. This enables backward compatibility and allows for future deprecation of M2 quorum registration.

[jaxxjj]

gm @stevennevins I've already updated the tests - could you please review them when you have a chance?