[ECO-5333] Apply OBJECT ProtocolMessage operations

[lawrence-forooghian]

Note: This PR is based on top of #22; please review that one first.

Implements the behaviours specified in ably/specification#343, except for buffering during a sync, which we have a separate task for. See commit messages for more details.

Summary by CodeRabbit

• New Features

  • Improved handling and application of object protocol messages, including structured and logged processing of map and counter operations.
  • Enhanced thread safety for object message processing.
  • Unified and centralized mutable state management for live objects.
  • Added detailed logging throughout object creation and operation application.

• Bug Fixes

  • Ensured consistent logging capability during object creation and operation handling.

• Tests

  • Expanded and refactored test coverage for map and counter operations, including initial value merging, operation application, and edge cases.
  • Added comprehensive tests for protocol message handling and operation applicability logic.
  • Introduced new test factories for streamlined creation of test objects and operations.

• Chores

  • Updated all test cases to use explicit logger parameters for improved traceability.