title: Eloquent get row with most attached relationships
body: <p>i have a 'projects' table and a 'users' table.
  users are able to like projects. this is a many  to many relationship using a pivot table.</p>
  
  <p>i would like to get the project with the most likes connected to it. 
  is there a simple way to achieve this using eloquent?</p>
  
  <p>The only way i can think of right now is by building to seperate queries, which i like to avoid.</p>
  
  <p>thank you.</p>