refactor: updated acknowledgements + more flutter packages [no ci]

Author: andreped

README.md

@@ -114,7 +114,12 @@ FeaturesDict({
 The training framework was mainly developed using [Keras](https://github.com/keras-team/keras) with [TensorFlow](https://github.com/tensorflow/tensorflow) backend.
 
 The mobile app was developed using Flutter, which is a framework developed by Google.
-For the app, the following _open_ packages were used [flutter_sensors](https://pub.dev/packages/flutter_sensors), [tflite_flutter](https://pub.dev/packages/tflite_flutter), and [wakelock](https://pub.dev/packages/wakelock).
+For the app, the following _open_ packages were used (either MIT or BSD-2 licensed):
+* [flutter_sensors](https://pub.dev/packages/flutter_sensors)
+* [tflite_flutter](https://pub.dev/packages/tflite_flutter)
+* [wakelock](https://pub.dev/packages/wakelock)
+* [sqflite](https://pub.dev/packages/sqflite)
+* [provider](https://pub.dev/packages/provider)
 
 ## How to cite