New note is not added to the list

[rtokun]

In the branch with custom ItemKeyedDataSource and Koin, when we add new Note it is not being added to the list, until we kill the app and launch it again. I think it happens because of DataSource is not invalidated, while it should be. Also, I think it wrong to inject DataSource as singleton, because each time NotesDataSourceFactory.create() has to return new DataSource.