Setup Proto Datastore

This documentation kinda off.

1. Go to the official repo
2. Using the latest version OK
3. In project/app/build.gradle, add the dependencies{}

   implementation  "com.google.protobuf:protobuf-javalite:3.19.4"
   implementation 'androidx.datastore:datastore:1.0.0'
   

4. Make your own .proto, read the guide about it here
5. In your .proto file, these two lines:

   option java_package = "com.example.application";
   option java_multiple_files = true;
   

   are important if you want to avoid the unnecessary compile error because of generated java files. Also, adjust your package name accordingly.

6. Rebuild
7. You should have the generated file under your package: com.example.application.YourFile
8. Proceed to make your implemented Serializer and dataStore file.