Jurisdiction — Non-residents — Action against foreign state insurance agent alleging that defendant negligently procured automobile insurance that did not provide sufficient underinsured motorist benefits — Defendant’s registration to do business in Florida and designation of a registered agent for service of process in Florida is insufficient, without more, to establish personal jurisdiction in Florida courts — Plaintiff did not establish basis for asserting general jurisdiction over defendant where complaint did not allege facts sufficient to establish that defendant engaged in substantial and not isolated activity in Florida — Due process standard for exercise of general jurisdiction over defendant was not satisfied where there was no showing that defendant is so heavily engaged in activity in Florida as to render it essentially at home in Florida