title: How to organize dart files inside packages in flutter
body: <p>I'm new at programming using flutter and I'd like to develop a small project containing a few screens: Login, Home, Settings, User, PurchaseHistory, etc.</p>
  
  <p>I need to organize the code inside packages so that it can readable easily.</p>
  
  <p>If I develop an Android App, I'd create some packages: model, activity, fragment, util, etc. If I create a LoginActivty, I'd put it inside activity package. If I create a User model, I'd put it inside model package. And so on.</p>
  
  <p>So If I develop a flutter project, where am I supposed to put all of the files I create so far?</p>
  
  <p>For now I've created only model package.</p>