pmt: Improve libpartition_map types and some functions.

- Add new operators to Map_t.
 - Add new flags to info function.
 - Move some local pmt function(s) to libhelper.
 - Etc...

src/functions/functions.hpp

@@ -99,7 +99,8 @@ private:
   std::vector<std::string> partitions;
   std::string jNamePartition, jNameSize, jNameLogical;
   int jIndentSize = 2;
-  bool jsonFormat = false;
+  bool jsonFormat = false, asByte = true, asKiloBytes = false, asMega = false,
+       asGiga = false;
 
 public:
   COMMON_FUNCTION_BODY();