Move finders to new query builder

[drujensen]

There are several finder methods that need to be moved to use the new query builder:

• count
• first
• first!
• find
• find!
• find_by
• find_by!
• find_each
• find_in_batches
• all

Also, We need to move the Collection and AssociationCollection with it's finders that allows for queries to be built off of the belongs_to and has_many relationships. It provides lazy querying so it only performs the query when the Collection is accessed.

[ilanusse]

@drujensen Do you want help with this? I'd like to help out with Granite

[robacarp]

@ilanusse I believe this is an open call for pull requests, yes. As a first contribution, my recommendation would be to choose one or two of the listed methods at most. Thanks for diving in!

[kevinelliott]

I'm not sure if this request is out of place, but it seems to go along with adding finders to the associations -- can we add order to the list?

Being able to do user.posts.order(created_at: :desc) instead of Post.where(user_id: user.id).order(created_at: :desc) seems logical.