Limitation of actions — Homeowners association’s action to foreclose lien for unpaid assessments — Error to enter summary judgment for defendants on basis of statute of limitations defense where statute of limitations defense was not raised in defendants’ pleadings, but was first raised in motion for summary judgment — Statute of limitations defense is one of enumerated affirmative defenses under rule 1.110(d), which must be affirmatively set forth in a pleading or it is deemed waived