Add project files.

PluginManager/Items/CustomProgressBar.cs

@@ -0,0 +1,27 @@
+using System;
+namespace PluginManager.Items
+{
+    public class CustomProgressBar
+    {
+        private const char _block = '#';
+        private const char _emptyBlock = ' ';
+        private const char _leftMargin = '[';
+        private const char _rightMargin = ']';
+
+        const string _back = "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b";
+        public static void WriteProgressBar(int percent)
+        {
+            Console.Write(_back);
+            Console.Write(_leftMargin);
+            var p = (int)((percent / 10f) + .5f);
+            for (var i = 0; i < 10; ++i)
+            {
+                if (i >= p)
+                    Console.Write(_emptyBlock);
+                else
+                    Console.Write(_block);
+            }
+            Console.Write($"{_rightMargin} " + percent + " %");
+        }
+    }
+}