Add granblue_id to WeaponKeys (#77)

Reimplementing #77

app/blueprints/api/v1/weapon_key_blueprint.rb

@@ -10,7 +10,7 @@ module Api
         }
       end
 
-      fields :slug, :series, :slot, :group, :order
+      fields :granblue_id, :slug, :series, :slot, :group, :order
     end
   end
 end

db/migrate/20230315095656_add_granblue_id_to_weapon_keys.rb

@@ -0,0 +1,6 @@
+class AddGranblueIdToWeaponKeys < ActiveRecord::Migration[7.0]
+  def change
+    # This needs to be NOT NULL, but initially it will be nullable until we migrate data
+    add_column :weapon_keys, :granblue_id, :integer, unique: true, null: true
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.0].define(version: 2023_01_31_084343) do
+ActiveRecord::Schema[7.0].define(version: 2023_03_15_095656) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "btree_gin"
   enable_extension "pg_trgm"
@@ -299,6 +299,7 @@ ActiveRecord::Schema[7.0].define(version: 2023_01_31_084343) do
     t.integer "group"
     t.integer "order"
     t.string "slug"
+    t.integer "granblue_id"
   end
 
   create_table "weapons", id: :uuid, default: -> { "gen_random_uuid()" }, force: :cascade do |t|