Add class and master level support to db

db/migrate/20220322080142_create_classes.rb

@@ -0,0 +1,14 @@
+class CreateClasses < ActiveRecord::Migration[6.0]
+  def change
+      create_table :classes, id: :uuid, default: -> { "gen_random_uuid()" } do |t|
+          t.string :name_en
+          t.string :name_jp
+
+          t.integer :proficiency1
+          t.integer :proficiency2
+
+          t.string :row
+          t.boolean :ml, default: false
+      end
+  end
+end

db/migrate/20220322084824_add_class_and_ml_to_party.rb

@@ -0,0 +1,6 @@
+class AddClassAndMlToParty < ActiveRecord::Migration[6.1]
+    def change
+        add_reference :parties, :class, name: :class_id, type: :uuid, foreign_key: { to_table: :classes }
+        add_column :parties, :ml, :integer 
+    end
+end