Add transcendence_step to GridWeapons and GridSummons

This will allow the user to set the level of their transcendence for Eternals and Bahamut

db/migrate/20230102234524_add_transcendence_step_to_grid_characters.rb

@@ -0,0 +1,5 @@
+class AddTranscendenceStepToGridCharacters < ActiveRecord::Migration[6.1]
+  def change
+    add_column :grid_characters, :transcendence_step, :integer, default: 0, null: false
+  end
+end

db/migrate/20230102234632_add_transcendence_step_to_grid_summons.rb

@@ -0,0 +1,5 @@
+class AddTranscendenceStepToGridSummons < ActiveRecord::Migration[6.1]
+  def change
+    add_column :grid_summons, :transcendence_step, :integer, default: 0, null: false
+  end
+end