Create migration for calendar events

Author: takatama

db/migrate/20230714141908_add_details_to_upcoming_events.rb

@@ -0,0 +1,8 @@
+class AddDetailsToUpcomingEvents < ActiveRecord::Migration[6.1]
+  def change
+    add_column :upcoming_events, :event_update_at, :datetime
+    add_column :upcoming_events, :address, :string
+    add_column :upcoming_events, :place, :string
+    add_column :upcoming_events, :limit, :integer
+  end
+end