…t Encoded header into Request object

…ader()

…Workflow Client execution

refactor EncodedValues and EncodedHeader;
init EncodedHeaderTestCase;
fix Encoders, Input, Request;
add Header into the ExecuteChildWorkflow command;

…pport

…x tests

…nboundInterceptor, WorkflowOutboundInterceptor

…dInterceptor::execute()

…ing in workflow, use new Pipeline to run existing interceptors.

Simplify Instance class.
Add ActivityName getter into `ExecuteActivity` command.
Cleanup Instance and its children

Move internal classes into Internal namespace.
Make Instance class more strict.

…ion interception:

- make WorkflowInput immutable; add method `with()`;
- create WFContext with next Input before WF run;
- make WorkflowContext::$input protected again; also add the `withInput()` method;

- make SignalInput immutable; add method `with()`;
- create WFContext with next Input before WF Signal run

repair Workflow outbound request interceptor

…ic context nullification; fix context cloning on Signal run

…put;

…ceptor`; add `WorkflowOutboundInterceptor`; update request objects

… interface

…fix `InterceptorCallException` throwing;

…kflowClientCallsInterceptor`

…nterceptor`

…yMethod()

# Conflicts:
#	src/Internal/Transport/Router/InvokeActivity.php
#	tests/Fixtures/data/Test_ActivityStubWorkflow.log
#	tests/Fixtures/data/Test_BinaryPayload.log
#	tests/Fixtures/data/Test_CancelledWithCompensationWorkflow.log
#	tests/Fixtures/data/Test_ContinueAsNew.log
#	tests/Fixtures/data/Test_ExecuteChildStubWorkflow.log
#	tests/Fixtures/data/Test_ExecuteChildStubWorkflow_02.log
#	tests/Fixtures/data/Test_ExecuteChildWorkflow.log
#	tests/Fixtures/data/Test_ExecuteProtoWorkflow.log
#	tests/Fixtures/data/Test_ExecuteSimpleDTOWorkflow.log
#	tests/Fixtures/data/Test_ExecuteSimpleWorkflowWithSequenceInBatch.log
#	tests/Fixtures/data/Test_ExecuteSimpleWorkflow_1.log
#	tests/Fixtures/data/Test_ExecuteWorkflowWithParallelScopes.log
#	tests/Fixtures/data/Test_MultipleWorkflowsInSingleWorker.log
#	tests/Fixtures/data/Test_PromiseChaining.log
#	tests/Fixtures/data/Test_SideEffect.log
#	tests/Fixtures/data/Test_Timer.log

New abstractions:

- `Interceptor` - the main internal interface for all interceptors
- `Pipeline` - internal pipeline of interceptors
- `PipelineProvider` - interface that provides a `Pipeline` for a specific type of interceptor

There are Interceptors:

- `ActivityInboundInterceptor` - an interface
- `WorkflowClientCallsInterceptor` - an interface
- `WorkflowInboundInterceptor` - an interface
- `WorkflowOutboundRequestInterceptor` - an interface
    - `WorkflowOutboundInterceptor` - an abstract class that implements the interface

…erface

…terceptor tests

…ceptor namespace; add interceptor Base classes

…lExternalWorkflow, CompleteWorkflow

…eptor interface comments

… GrpcClientInterceptor

…t awaits works with OutgoingRequest interceptor

…d after it; cleanup

Write history length into WorkflowInfo.

# Conflicts:
#	src/Client/WorkflowClient.php
#	src/Internal/Workflow/WorkflowContext.php
#	src/Workflow.php
#	src/Workflow/WorkflowContextInterface.php

…lowInfo

Co-authored-by: roxblnfk <[email protected]>

Co-authored-by: roxblnfk <[email protected]>

# Conflicts:
#	api/v1/GPBMetadata/Protocol.php
#	api/v1/Temporal/Roadrunner/Internal/Message.php
#	proto
#	resources/protocol.proto
#	src/Client/GRPC/ServiceClient.php
#	src/Internal/Declaration/WorkflowInstance.php
#	src/Internal/Workflow/Process/Process.php
#	src/Internal/Workflow/WorkflowContext.php
#	src/Worker/Transport/Codec/ProtoCodec/Decoder.php
#	tests/Fixtures/data/Test_ExecuteProtoWorkflow.log

…toJsonConverter` (#339)

# Conflicts:
#	src/Internal/Transport/Router/InvokeQuery.php
#	src/Internal/Transport/Router/InvokeSignal.php
#	src/Internal/Transport/Router/StartWorkflow.php
#	src/Internal/Workflow/ActivityStub.php
#	src/Internal/Workflow/ExternalWorkflowStub.php
#	src/Worker/Transport/Codec/JsonCodec/Decoder.php
#	src/Worker/Transport/Codec/ProtoCodec/Decoder.php
#	src/Worker/Transport/Codec/ProtoCodec/Encoder.php
#	src/Worker/Transport/Command/Command.php
#	src/Worker/Transport/Command/FailureResponse.php
#	src/Worker/Transport/Command/Request.php
#	src/Worker/Transport/Command/RequestInterface.php
#	src/Worker/Transport/Command/Response.php
#	src/Worker/Transport/Command/SuccessResponse.php
#	tests/Fixtures/data/Test_ActivityStubWorkflow.log
#	tests/Fixtures/data/Test_BatchedSignal.log
#	tests/Fixtures/data/Test_BatchedSignal_01.log
#	tests/Fixtures/data/Test_BinaryPayload.log
#	tests/Fixtures/data/Test_CancelledMidflightWorkflow.log
#	tests/Fixtures/data/Test_CancelledNestedWorkflow.log
#	tests/Fixtures/data/Test_CancelledWithCompensationWorkflow.log
#	tests/Fixtures/data/Test_ContinueAsNew.log
#	tests/Fixtures/data/Test_EmptyWorkflow.log
#	tests/Fixtures/data/Test_ExecuteChildStubWorkflow.log
#	tests/Fixtures/data/Test_ExecuteChildStubWorkflow_02.log
#	tests/Fixtures/data/Test_ExecuteChildWorkflow.log
#	tests/Fixtures/data/Test_ExecuteProtoWorkflow.log
#	tests/Fixtures/data/Test_ExecuteSimpleDTOWorkflow.log
#	tests/Fixtures/data/Test_ExecuteSimpleWorkflowWithSequenceInBatch.log
#	tests/Fixtures/data/Test_ExecuteSimpleWorkflow_1.log
#	tests/Fixtures/data/Test_ExecuteWorkflowWithParallelScopes.log
#	tests/Fixtures/data/Test_GetQuery.log
#	tests/Fixtures/data/Test_MultipleWorkflowsInSingleWorker.log
#	tests/Fixtures/data/Test_PromiseChaining.log
#	tests/Fixtures/data/Test_RuntimeSignal.log
#	tests/Fixtures/data/Test_SendSignalBeforeCompletingWorkflow.log
#	tests/Fixtures/data/Test_SideEffect.log
#	tests/Fixtures/data/Test_SignalChildViaStubWorkflow.log
#	tests/Fixtures/data/Test_SignalSteps.log
#	tests/Fixtures/data/Test_Timer.log
#	tests/Functional/WorkflowTestCase.php
#	tests/Unit/Router/StartWorkflowTestCase.php