Added JsonTester

Added LicenserTester
Added SqliteCacheTester
Updated EnvTester
Updated LoggerTester

JsonTester/Program.cs

@@ -0,0 +1,15 @@
+using EonaCat.Json;
+using System;
+using System.IO;
+
+namespace EonaCat.Tester
+{
+    public static class JsonTest
+    {
+        public static void Main(string[] args)
+        {
+            var test = JsonHelper.ToObject<dynamic>(File.ReadAllText("E:\\TestFiles\\large-file.json"));
+            Console.WriteLine(JsonHelper.ToJson(test));
+        }
+    }
+}