* update durability provider class for new core-entities support.

* add configuration setting for max entity concurrency to DurableTaskOptions

* minor fixes.

* update DurableClient to take advantage of native entity queries if available

* fix minor errors.

* address PR feedback

* implement passthrough middleware for entities.

* propagate changes to protocol

* update/simplify protobuf format

* address PR feedback

* implement entity queries for grpc listener

* propagate changes to protocol

* update/simplify protobuf format

* durability provider must implement and pass-through IEntityOrchestrationService since it wraps the orchestration service

* simple mistake

* fix misunderstanding of initializer syntax (produced null, not empty list)

* fix missing failure details

* fix missing compile-time switch for trigger value type

* fix missing optional arguments

* fix  missing override

* add an entity example to the DotNetIsolated smoke test project.

* remove superfluous argument.

* address PR feedback

* Add worker side entity trigger and logic

* update comments

* Address PR comments

…core-entities

* assign the necessary AzureStorageOrchestrationServiceSettings

* propagate changes to query name and metadata parameters

* add missing override for TaskOrchestrationEntityFeature

* add configuration for EnableEntitySupport

* rename includeStateless to includeTransient

…ions are called on a backend that does not support entities (#2630)

# Conflicts:
#	release_notes.md
#	src/WebJobs.Extensions.DurableTask/ContextImplementations/DurableClient.cs
#	src/WebJobs.Extensions.DurableTask/WebJobs.Extensions.DurableTask.csproj
#	src/Worker.Extensions.DurableTask/AssemblyInfo.cs
#	src/Worker.Extensions.DurableTask/Worker.Extensions.DurableTask.csproj
#	test/SmokeTests/OOProcSmokeTests/DotNetIsolated/DotNetIsolated.csproj

…are testing whether the input is propagated

…hestrators.

…ner exceptions), and similarly for activity and orchestration error checking.