feat(decorators): TelegrafPhone added

lib/decorators/telegraf-phone.decorator.ts

@@ -0,0 +1,12 @@
+import { SetMetadata } from '@nestjs/common';
+import { DECORATORS } from '../telegraf.constants';
+
+/**
+ * Phone number handling.
+ * @param phone Phone number
+ *
+ * https://telegraf.js.org/#/?id=phone
+ */
+export function TelegrafPhone(phone: string | string[]): MethodDecorator {
+  return SetMetadata(DECORATORS.PHONE, { phone });
+}