Public C++ header files and samples updates (#819)

* Public C++ header files (source/include/rocprofiler-sdk/cxx)

* Update samples/api_buffered_tracing

- scratch memory and page migration
- README

* Update samples/api_buffered_tracing

- page migration component in sample

* Update tests/page-migration/validate.py

- fix checks for page migration operation names

* Update tests/page-migration/validate.py

- fix get_allocated_pages

* Update scratch memory and page migration validations

* Fix include/rocprofiler-sdk/cxx installation

* Rework include/rocprofiler-sdk/cxx

- Improve name_info to support const char*, string_view, string

* Update samples/api_{buffered,callback}_tracing

* External correlation ID request sample

- includes correlation ID retirement demo

* Update samples/api_buffered_tracing/README.md

* Update lib/rocprofiler-sdk/hsa/queue.cpp

- generate correlation ID for kernel launch if one doesn't exist

* Remove priority check from tool libraries (samples/tests)

- if(priority > 0) return nullptr check in rocprofiler_configure has proliferated beyond its intended use

* Apply suggestions from code review

source/include/rocprofiler-sdk/registration.h

@@ -204,7 +204,8 @@ rocprofiler_is_finalized(int* status) ROCPROFILER_API ROCPROFILER_NONNULL(1);
  *      uint32_t patch = version % 100;
  *
  *      // print info
- *      printf("Configuring rocprofiler (v%u.%u.%u) [%s]\n", major, minor, patch, runtime_version);
+ *      printf("Configuring %s with rocprofiler-sdk (v%u.%u.%u) [%s]\n",
+ *             client_id->name, major, minor, patch, runtime_version);
  *
  *      // create configure data
  *      static auto cfg = rocprofiler_tool_configure_result_t{ &my_init_func,