saveInteger method
Method for storing an Integer with a defined key.
Example:
// RCache.common.saveInteger(101, key: RCacheKey("integer"));
Implementation
@override
Future<void> saveInteger(int value, {required RCacheKey key}) async {
  try {
    return await methodChannel.invokeMethod(
      RCacheMethod.key.save.integer,
      rArgs(type: RCacheMethod.key.common, key: key, value: value),
    );
  } on PlatformException catch (e) {
    return Future.error(e);
  }
}