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

samples/code_object_tracing/client.cpp

@@ -352,9 +352,6 @@ rocprofiler_configure(uint32_t                 version,
                       uint32_t                 priority,
                       rocprofiler_client_id_t* id)
 {
-    // only activate if main tool
-    if(priority > 0) return nullptr;
-
     // set the client name
     id->name = "ExampleTool";
 
@@ -368,8 +365,8 @@ rocprofiler_configure(uint32_t                 version,
 
     // generate info string
     auto info = std::stringstream{};
-    info << id->name << " is using rocprofiler-sdk v" << major << "." << minor << "." << patch
-         << " (" << runtime_version << ")";
+    info << id->name << " (priority=" << priority << ") is using rocprofiler-sdk v" << major << "."
+         << minor << "." << patch << " (" << runtime_version << ")";
 
     std::clog << info.str() << std::endl;