Issue #226: Implemented two modes of lock ticks: LOCK_EVERY_TICK and LOCK_EVERY_CANDLE. Added event OnLockTicks

MtApi/Events/MtEventTypes.cs

@@ -0,0 +1,9 @@
+namespace MtApi.Events
+{
+    public enum MtEventTypes
+    {
+        LastTimeBar = 1,
+        ChartEvent  = 2,
+        OnLockTicks = 3
+    }
+}