Update README.md (#237)

* Update README.md

Add google_maps_flutter to README.md

* Update README.md

* Update README.md according to revierer's comment

Author: seungsoo47

README.md

@@ -21,6 +21,7 @@ The _"non-endorsed"_ status means that the plugin is not endorsed by the origina
 | [**device_info_plus_tizen**](packages/device_info_plus) | [device_info_plus](https://github.com/fluttercommunity/plus_plugins/tree/main/packages/device_info_plus) (1st-party) | [![pub package](https://img.shields.io/pub/v/device_info_plus_tizen.svg)](https://pub.dev/packages/device_info_plus_tizen) | No |
 | [**flutter_tts_tizen**](packages/flutter_tts) | [flutter_tts](https://github.com/dlutton/flutter_tts) (3rd-party) | [![pub package](https://img.shields.io/pub/v/flutter_tts_tizen.svg)](https://pub.dev/packages/flutter_tts_tizen) | No |
 | [**geolocator_tizen**](packages/geolocator) | [geolocator](https://github.com/Baseflow/flutter-geolocator/tree/master/geolocator) (3rd-party) | [![pub package](https://img.shields.io/pub/v/geolocator_tizen.svg)](https://pub.dev/packages/geolocator_tizen) | No |
+| [**google_maps_flutter_tizen**](packages/google_maps_flutter) | [google_maps_flutter](https://github.com/flutter/plugins/tree/master/packages/google_maps_flutter) (1st-party) | [![pub package](https://img.shields.io/pub/v/google_maps_flutter_tizen.svg)](https://pub.dev/packages/google_maps_flutter_tizen) | No |
 | [**image_picker_tizen**](packages/image_picker) | [image_picker](https://github.com/flutter/plugins/tree/master/packages/image_picker) (1st-party) | [![pub package](https://img.shields.io/pub/v/image_picker_tizen.svg)](https://pub.dev/packages/image_picker_tizen) | No |
 | [**integration_test_tizen**](packages/integration_test) | [integration_test](https://github.com/flutter/flutter/tree/master/packages/integration_test) (1st-party) | [![pub package](https://img.shields.io/pub/v/integration_test_tizen.svg)](https://pub.dev/packages/integration_test_tizen) | No |
 | [**messageport_tizen**](packages/messageport) | (Tizen-only) | [![pub package](https://img.shields.io/pub/v/messageport_tizen.svg)](https://pub.dev/packages/messageport_tizen) | N/A |
@@ -63,6 +64,7 @@ The following packages are deprecated.
 | [**device_info_plus_tizen**](packages/device_info_plus) | ✔️ | ✔️ | ✔️ | ✔️ |
 | [**flutter_tts_tizen**](packages/flutter_tts) | ✔️ | ✔️ | ✔️ | ✔️ |
 | [**geolocator_tizen**](packages/geolocator) | ✔️ | ✔️ | ❌ | ❌ | Not applicable for TV |
+| [**google_maps_flutter_tizen**](packages/google_maps_flutter) | ❌ | ❌ | ✔️ | ❌ | Dependent library unavailable |
 | [**image_picker_tizen**](packages/image_picker) | ⚠️ | ❌ | ❌ | ❌ | No camera<br>No file manager app |
 | [**integration_test_tizen**](packages/integration_test) | ✔️ | ✔️ | ✔️ | ✔️ |
 | [**messageport_tizen**](packages/messageport) | ✔️ | ✔️ | ✔️ | ✔️ |