Added configuration tests & improved json parsing by converting into target types

unittests/unittests_core/configuration/test-settings.json

@@ -0,0 +1,25 @@
+{
+  "TimeFormatSettings": {
+    "DateFormat": "%Y-%m-%d",
+    "TimeFormat": "%H:%M:%S",
+    "DateTimeFormat": "%Y-%m-%d %H:%M:%S.%f",
+    "DateTimeLogFormat": "%Y-%m-%d_%H-%M-%S"
+  },
+  "LoggingSettings": {
+    "Path": "logs/$date_now/",
+    "Filename": "bot.log",
+    "ConsoleLogLevel": "TRACE",
+    "FileLogLevel": "TRACE"
+  },
+  "DatabaseSettings": {
+    "Host": "localhost",
+    "User": "local",
+    "Password": "bG9jYWw=",
+    "Database": "local",
+    "Port": "3306",
+    "Charset": "utf8mb4",
+    "UseUnicode": "true",
+    "Buffered": "true",
+    "AuthPlugin": "mysql_native_password"
+  }
+}