Add dictionary ingest and view

Dictionary json ingest to database, view populated with database contents

app/models/definition.rb

@@ -0,0 +1,3 @@
+class Definition < ApplicationRecord
+  belongs_to :word
+end

app/models/word.rb

@@ -0,0 +1,3 @@
+class Word < ApplicationRecord
+  has_many :definitions
+end