main: Log host system memory parameters

Logs both physical memory and swapfile sizes, this is useful for support.

src/common/CMakeLists.txt

@@ -83,6 +83,8 @@ add_library(common STATIC
     logging/text_formatter.cpp
     logging/text_formatter.h
     math_util.h
+    memory_detect.cpp
+    memory_detect.h
     memory_ref.h
     memory_ref.cpp
     microprofile.cpp