Add a debug message to renderdoc cmake like for PIX (#7715)

Signed-off-by: Bindless-Chicken <1039134+Bindless-Chicken@users.noreply.github.com>

Gems/Atom/RHI/Code/CMakeLists.txt

@@ -14,6 +14,7 @@ include(${pal_dir}/AtomRHITests_traits_${PAL_PLATFORM_NAME_LOWERCASE}.cmake)
 if(PAL_TRAIT_BUILD_RENDERDOC_SUPPORTED)
     set(LY_RENDERDOC_ENABLED OFF CACHE BOOL "Enable RenderDoc integration. Use LY_RENDERDOC_PATH to specific the path to RenderDoc.")
     if(LY_RENDERDOC_ENABLED)
+        message(STATUS "Renderdoc found, enabling as a graphics debugger")
         set(RENDERDOC_DEPENDENCY 3rdParty::renderdoc)
     endif()
 endif()