Add onboarding screen + token check

services/message.tsx

@@ -0,0 +1,45 @@
+import Toast from 'react-native-toast-message';
+
+export class Message {
+  /**
+   * Set success message
+   *
+   * @param message
+   */
+  static success(message: string) {
+    Message.send('success', message);
+  }
+
+  /**
+   * Send error message
+   *
+   * @param message
+   */
+  static error(message: string) {
+    Message.send('error', message);
+  }
+
+  /**
+   * Send info message
+   *
+   * @param message
+   */
+  static info(message: string) {
+    Message.send('info', message);
+  }
+
+  /**
+   * Send message
+   *
+   * @param type
+   * @param message
+   */
+  static send(type: string, message: string) {
+    Toast.show({
+      type: type,
+      text1: message,
+      position: 'bottom',
+    })
+  }
+
+}