PC sampling examples: single user, multiple agents (#31)

* PC sampling examples: single user, multiple agents

The example assumes that a single user activates PC sampling service
on multiple agents. Preferably, the user chooses stochastic sampling
over host-trap sampling.

* cmake formatting (cmake-format) (#33)

Co-authored-by: vlaindic <vlaindic@users.noreply.github.com>

* source formatting (clang-format v11) (#32)

Co-authored-by: vlaindic <vlaindic@users.noreply.github.com>

* pc sampling samples: anynomus namespace and string_view

---------

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: vlaindic <vlaindic@users.noreply.github.com>

[ROCm/rocprofiler-sdk commit: 76717efa64]

projects/rocprofiler-sdk/samples/pc_sampling/common.h

@@ -7,9 +7,12 @@
 #include <cstdint>
 #include <cstdio>
 #include <cstdlib>
+#include <string>
+#include <string_view>
 
-constexpr size_t BUFFER_SIZE_BYTES = 4096;
-constexpr size_t WATERMARK         = (BUFFER_SIZE_BYTES / 2);
+constexpr size_t       BUFFER_SIZE_BYTES = 4096;
+constexpr size_t       WATERMARK         = (BUFFER_SIZE_BYTES / 2);
+const std::string_view MI200_NAME        = "gfx90a";
 
 #define ROCPROFILER_CALL(result, msg)                                                              \
     {                                                                                              \