Show sizes

table, index, toast and total size per Table
size of each index

pglab/CustomDataRole.h

@@ -13,10 +13,17 @@ enum class ReferencedType {
 	PgRole
 };
 
+///
+enum DataMeaning {
+    DataMeaningNormal,
+    DataMeaningBytes ///< the value represents bytes  pretty print in KiB, MiB, GiB, TiB, PiB, EiB
+};
+
 enum CustomDataRole {
 	CustomDataTypeRole = Qt::UserRole, ///< Requist the basic type of the value
 	CustomReferencedTypeRole, ///<
-	// Add other enum before this one is we might want to have multiple hidden values
+    CustomDataMeaningRole,
+    // Add other enum before this one as we might want to have multiple hidden values
 	FirstHiddenValue, ///< Used to request value from a model which is not handed to the view
 };