Removed ICompressionStrategyResolver interface and file, and added ICompressionCodec and ICompressionCodecResolver interface. Updated relevant classes for the new interface. Specifically, added Zstd class under Compression as a new compression method. Also modified WorkflowInstanceStore.cs, None.cs, EFCoreWorkflowInstanceStore.cs, GZip.cs, and ActivityExecutionLogStore.cs for uniform compression terminology.
