feat: Add turn exceptions

Author: Jandini

src/RightTurn/Exceptions/TurnConfigurationRequiredException.cs

@@ -0,0 +1,11 @@
+namespace RightTurn.Exceptions
+{
+    public class TurnConfigurationRequiredException : TurnException
+    {
+        public TurnConfigurationRequiredException()
+            : base("IConfiguration is required. Use RightTurn.Extensions.Configuration to provide configuration builder.")
+        {
+
+        }
+    }
+}

src/RightTurn/Exceptions/TurnException.cs

@@ -0,0 +1,11 @@
+using System;
+
+namespace RightTurn.Exceptions
+{
+    public class TurnException : Exception
+    {
+        public TurnException(string message) : base(message)
+        {
+        }
+    }
+}