Global: add new unit related options

1. `--<module>-space-before-unit`
2. `--duration-abbreviation`
3. various code refactoring and cleanups

src/modules/physicalmemory/physicalmemory.c

@@ -1,7 +1,7 @@
 #include "common/printing.h"
 #include "common/jsonconfig.h"
-#include "common/parsing.h"
 #include "common/percent.h"
+#include "common/size.h"
 #include "detection/physicalmemory/physicalmemory.h"
 #include "modules/physicalmemory/physicalmemory.h"
 #include "util/stringUtils.h"
@@ -32,7 +32,7 @@ void ffPrintPhysicalMemory(FFPhysicalMemoryOptions* options)
     {
         ++i;
         ffStrbufClear(&prettySize);
-        ffParseSize(device->size, &prettySize);
+        ffSizeAppendNum(device->size, &prettySize);
 
         if (options->moduleArgs.outputFormat.length == 0)
         {