MINIFICPP-2816 Add controller_service::api_implementations to C api

[martinzink]

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[Copilot]

Pull request overview

This PR extends the C extension API for MiNiFi C++ to let C-based controller services declare and expose multiple "provided interfaces" (additional C++ APIs they implement). The agent surfaces these as api_implementations in class descriptions, and MinifiProcessContextGetControllerService now uses a new get_interface callback to cast a controller service implementation to a requested API type. A new stable-api-sandbox test extension exercises the feature with Dog/Duck controller services that both implement CanFlyControllerApi and NumberOfLegsControllerApi, consumed by a ZooProcessor.

Changes:

• Added provided_interfaces_* and a get_interface callback to the C controller-service ABI, plumbed through useControllerServiceClassDefinition and useCControllerServiceClassDescription into ClassDescription::api_implementations.
• Introduced a C++-side ProvidedInterface / createProvidedInterface helper and a ControllerServiceType::minifiSystemControllerServiceType factory.
• Added a new stable-api-sandbox extension (controller services, processor, init, tests, CMake) demonstrating and testing the multi-interface controller service flow.

Reviewed changes

Copilot reviewed 14 out of 14 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
minifi-api/include/minifi-c/minifi-c.h	Adds provided_interfaces_* fields and get_interface callback to controller-service C ABI structs.
minifi-api/include/minifi-cpp/core/ControllerServiceType.h	Adds minifiSystemControllerServiceType factory and tightens reformatting; private ctor for raw fields.
minifi-api/common/include/minifi-cpp/core/ProvidedControllerServiceInterface.h	New header defining ProvidedInterface and the createProvidedInterface helper template.
extension-framework/cpp-extension-lib/include/api/core/Resource.h	Wires Class::ProvidedInterfaces into the C definition and implements the get_interface lambda.
libminifi/src/minifi-c.cpp	Builds api_implementations from C-side interface names; uses get_interface in MinifiProcessContextGetControllerService.
extensions/stable-api-sandbox/AnimalControllerServiceApis.h	Defines two abstract controller-service APIs used by the sandbox tests.
extensions/stable-api-sandbox/AnimalControllerServices.{h,cpp}	DogController/DuckController implementing both APIs and declaring ProvidedInterfaces.
extensions/stable-api-sandbox/ZooProcessor.{h,cpp}	Test processor that fetches both interfaces from configured controller services.
extensions/stable-api-sandbox/ExtensionInitializer.cpp	Registers the new processor and controller services as a C extension.
extensions/stable-api-sandbox/CMakeLists.txt	New CMake module building the sandbox extension.
extensions/stable-api-sandbox/tests/CMakeLists.txt	Builds the sandbox extension's tests.
extensions/stable-api-sandbox/tests/ZooTests.cpp	End-to-end test exercising multi-interface lookup via the C API.

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[Copilot]

Pull request overview

Copilot reviewed 14 out of 14 changed files in this pull request and generated 5 comments.

[martinzink]

Ive renamed it from group_name to module_name, because this groupname was not the groupname in C2 but rather the artifact name