Added new migrations

• Added:
- new migrations

db/migrate/20200806162649_add_index_to_statuses_reply.rb

@@ -0,0 +1,7 @@
+class AddIndexToStatusesReply < ActiveRecord::Migration[5.2]
+  disable_ddl_transaction!
+
+  def change
+    add_index :statuses, :reply, algorithm: :concurrently
+  end
+end