moved to logic from api to lib

Models/ColumnValue.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace FarmMapsAPI.Carbon.Models
+{
+    public class ColumnValue
+    {
+        public string Key { get; set; }
+        public double Value { get; set; }
+
+        public ColumnValue(string key, double value)
+        {
+            Key = key;
+            Value = value;
+        }
+    }
+
+    public class YearColumnValue
+    {
+        public int Key { get; set; }
+        public double Value { get; set; }
+
+        public YearColumnValue(int key, double value)
+        {
+            Key = key;
+            Value = value;
+        }
+    }
+}