feat(models): extend claim with Claim and Comment

examples/blog/app/models/like.rb

@@ -0,0 +1,10 @@
+class Like < Prism::Orm::Model
+  belongs_to :user
+  belongs_to :likeable, polymorphic: true, counter_cache: true
+
+  # Same reasoning as Comment#acts_as_paranoid - a trashed post's likes (and
+  # a trashed post's comments' own likes) come back with it on restore.
+  acts_as_paranoid
+
+  validates :user_id, presence: true, uniqueness: { scope: %i[likeable_id likeable_type] }
+end