[QC-1346] Scaffolding to share common code among QC data processors (#2660)

* QC-1346 Scaffolding to share common code among QC data processors

Actor is a template base class for all QC Data Processors. It is supposed to bring their commonalities together,
such as: service initialization, Data Processing Layer adoption, retrieving configuration and runtime parameters,
interactions with controlling entities (DPL driver, AliECS, ODC).

The design is based on CRTP (see the web for explanation), which allows us to:
- avoid code repetition in implementing aforementioned commonalities
- optionally perform certain actions depending on traits of an Actor specialization.
CRTP, in contrast to dynamic inheritance, is also advertised to avoid performance impact due to vtable lookups.
It is certainly a nice bonus in our case, but it was not the main motivation for CRTP-based approach.

To allow for compile-time customization of centralized Actor features, we require each concrete Actor to implement
an ActorTraits structure with certain parameters which is enforced with ValidActorTraits concept.
The traits are separated from the main Actor class to improve readability and allow for shorter compilation times
by allowing many helper functions avoid including Actor.h and a corresponding actor specialization. For additional
savings on compilation time and clutter in code, we validate ActorTraits specializations with a concept only in
Actor, but this could be revisited if proven wrong.

This commit paves the path for refactoring existing QC data processors as Actor specializations/children.

* keep clang happy even though I don't believe it's right

Clang complains that:
```
SOURCES/QualityControl/2660/0/Framework/test/testActor.cxx
/Volumes/build/alice-ci-workdir/qualitycontrol-o2/sw/SOURCES/QualityControl/2660/0/Framework/test/testActor.cxx:97:5: error: call to consteval function 'o2::quality_control::core::UnrequestedAccessActor::assertNoAccessToServices<o2::quality_control::core::UnrequestedAccessActor>' is not a constant expression
   97 |     assertNoAccessToServices<UnrequestedAccessActor>();
      |     ^
/Volumes/build/alice-ci-workdir/qualitycontrol-o2/sw/SOURCES/QualityControl/2660/0/Framework/test/testActor.cxx:97:5: note: implicit use of 'this' pointer is only allowed within the evaluation of a call to a 'constexpr' member function
1 error generated.
```

GCC is fine and is able to process it as a consteval expression. Let's keep both happy by using constexpr, given it's just a test.

* Assume "resilient" for critical data processors with uncertain upstream

* Move correct inheritance check to happen after the type is fully known

to make clang happy again

* Get rif of the protection against faulty inheritance of actors

The disadvantage is that then the child can access and modify parent's private members, such as mActivity, and cause rather unpredictable behaviours.
I don't think it's worth having a protection which in the end would cause a different kind of bugs.

* add missing file header

Author: knopers8

Framework/CMakeLists.txt

@@ -140,6 +140,9 @@ add_library(O2QualityControl
   src/QCInputsAdapters.cxx
   src/QCInputsFactory.cxx
   src/UserInputOutput.cxx
+  src/Actor.cxx
+  src/ActorHelpers.cxx
+  src/DataProcessorAdapter.cxx
 )
 
 target_include_directories(
@@ -270,12 +273,16 @@ endforeach()
 add_executable(o2-qc-test-core
                test/testActivity.cxx
                test/testActivityHelpers.cxx
+               test/testActorHelpers.cxx
+               test/testActorTraits.cxx
+               test/testActor.cxx
                test/testAggregatorInterface.cxx
                test/testAggregatorRunner.cxx
                test/testCheck.cxx
                test/testCheckInterface.cxx
                test/testCheckRunner.cxx
                test/testCustomParameters.cxx
+               test/testDataProcessorAdapter.cxx
                test/testDataHeaderHelpers.cxx
                test/testInfrastructureGenerator.cxx
                test/testMonitorObject.cxx
@@ -295,6 +302,7 @@ add_executable(o2-qc-test-core
                test/testQualitiesToFlagCollectionConverter.cxx
                test/testQCInputs.cxx
                test/testUserInputOutput.cxx
+               test/testStringUtils.cxx
 )
 set_property(TARGET o2-qc-test-core
              PROPERTY RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/tests)
@@ -310,6 +318,7 @@ target_include_directories(o2-qc-test-core PRIVATE ${CMAKE_SOURCE_DIR})
 target_include_directories(o2-qc-test-core PRIVATE $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/include>)
 
 set(TEST_SRCS
+    test/testActorCallbacks.cxx
     test/testDbFactory.cxx
     test/testPublisher.cxx
     test/testQcInfoLogger.cxx
@@ -325,12 +334,12 @@ set(TEST_SRCS
     test/testWorkflow.cxx
     test/testRepoPathUtils.cxx
     test/testUserCodeInterface.cxx
-    test/testStringUtils.cxx
     test/testRunnerUtils.cxx
     test/testBookkeepingQualitySink.cxx
   )
 
 set(TEST_ARGS
+    "-b --run"
     ""
     ""
     ""
@@ -380,6 +389,8 @@ endforeach()
 
 target_include_directories(testCcdbDatabase PRIVATE $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/include>)
 
+set_property(TEST testActorCallbacks PROPERTY TIMEOUT 30)
+set_property(TEST testActorCallbacks PROPERTY LABELS slow)
 set_property(TEST testWorkflow PROPERTY TIMEOUT 40)
 set_property(TEST testWorkflow PROPERTY LABELS slow)
 set_property(TEST testCheckWorkflow PROPERTY TIMEOUT 50)