Create a TWRP Disk Usage Class to retain state about a directory and whether we should skip it in other classes like twrpTar.
Moved Get_Folder_Size to this new class.

Change-Id: If0a0220f900eb109581f2eeaf7b76e3f7d6886f1
diff --git a/partitions.hpp b/partitions.hpp
index 62f95d0..287da62 100644
--- a/partitions.hpp
+++ b/partitions.hpp
@@ -21,6 +21,7 @@
 
 #include <vector>
 #include <string>
+#include "twrpDU.hpp"
 
 #define MAX_FSTAB_LINE_LENGTH 2048
 
@@ -162,7 +163,7 @@
 class TWPartitionManager
 {
 public:
-	TWPartitionManager() {}
+	TWPartitionManager();													  // Constructor for TWRPartionManager
 	~TWPartitionManager() {}
 
 public: