MINIFICPP-2764 Controller Service CPP API

[martinzink]

This PR includes the CPP bindings and wrappers around the stable C API.
This API in action can be seen in #2153
Depends on

• MINIFICPP-2708 Controller Service C API #2096

---

Thank you for submitting a contribution to Apache NiFi - MiNiFi C++.

In order to streamline the review of the contribution we ask you
to ensure the following steps have been taken:

For all changes:

• Is there a JIRA ticket associated with this PR? Is it referenced
  in the commit message?

• Does your PR title start with MINIFICPP-XXXX where XXXX is the JIRA number you are trying to resolve? Pay particular attention to the hyphen "-" character.

• Has your PR been rebased against the latest commit within the target branch (typically main)?

• Is your initial contribution a single, squashed commit?

For code changes:

• If adding new dependencies to the code, are these dependencies licensed in a way that is compatible for inclusion under ASF 2.0?
• If applicable, have you updated the LICENSE file?
• If applicable, have you updated the NOTICE file?

For documentation related changes:

• Have you ensured that format looks appropriate for the output in which it is rendered?

Note:

Please ensure that once the PR is submitted, you check GitHub Actions CI results for build issues and submit an update to your PR as soon as possible.

[Copilot]

Pull request overview

This PR introduces Controller Service support into the MiNiFi C++ extension C/C++ API surface, including runtime lookup from ProcessContext, C++ wrapper types for controller services, and test utilities to construct/register controller services in unit tests.

Changes:

• Add C API forward declarations and C++ context/wrapper types for Controller Services (including property access via ControllerServiceContext).
• Add ProcessContext::getControllerService() and config-parsing helpers to resolve controller services from processor properties.
• Extend test harness utilities to create/register controller services and modernize some STL usage in tests.

Reviewed changes

Copilot reviewed 14 out of 14 changed files in this pull request and generated 13 comments.

Show a summary per file

File	Description
minifi-api/include/minifi-c/minifi-c.h	Adds opaque MinifiControllerService forward declaration for the C API.
libminifi/test/libtest/unit/TestBase.h	Extends TestPlan API (add controller overload, const-correct runProcessor).
libminifi/test/libtest/unit/TestBase.cpp	Implements controller registration in tests; modernizes algorithms (ranges); updates log search logic.
libminifi/include/utils/CControllerService.h	Adjusts C controller-service class-description bridging function signature.
extension-framework/cpp-extension-lib/src/core/ProcessContext.cpp	Implements controller service lookup via C API.
extension-framework/cpp-extension-lib/src/core/ControllerServiceImpl.cpp	Adds base implementation for C++ extension controller services.
extension-framework/cpp-extension-lib/src/core/ControllerServiceContext.cpp	Implements property retrieval for controller services via C API.
extension-framework/cpp-extension-lib/libtest/CProcessorTestUtils.h	Adds helper to create custom C controller services for tests.
extension-framework/cpp-extension-lib/include/api/utils/ProcessorConfigUtils.h	Adds helpers to parse controller-service properties and resolve services.
extension-framework/cpp-extension-lib/include/api/core/Resource.h	Adds controller-service class description builder and related includes.
extension-framework/cpp-extension-lib/include/api/core/ProcessorImpl.h	Minor const/namespace qualification adjustments.
extension-framework/cpp-extension-lib/include/api/core/ProcessContext.h	Declares getControllerService API.
extension-framework/cpp-extension-lib/include/api/core/ControllerServiceImpl.h	Declares controller service base class for extension authors.
extension-framework/cpp-extension-lib/include/api/core/ControllerServiceContext.h	Declares controller service context wrapper.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.