Add project files.

Exceptions.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Lava.NET.Exceptions
+{
+    /// <summary>
+    /// Sending error when Lava.ru type is not equals your type
+    /// </summary>
+    public class TypeException : Exception {
+        public TypeException(string? message) : base(message) { }
+        public TypeException() : base() { }
+        public TypeException(string? message, Exception exception) : base(message, exception) { }
+    }
+}