common: Implement a high resolution steady clock

This implementation provides a consistent, high performance, and high resolution clock where/when std::chrono::steady_clock does not provide sufficient precision.

src/common/CMakeLists.txt

@@ -113,6 +113,8 @@ add_library(common STATIC
     socket_types.h
     spin_lock.cpp
     spin_lock.h
+    steady_clock.cpp
+    steady_clock.h
     stream.cpp
     stream.h
     string_util.cpp