Yes on the windborne debris, just put in on the drawings and the contractor must select a product that meets the project wind requirements for wind pressure and impact resistance.
No on the hydrostatic pressure. Depending on the flood zone elevation, this could amount to several feet of water, and you would need steel floodgates to properly resist those lateral forces. Also, no garage door opening is water tight. In most flood events the water rises at a rate that allows the water to leak around the garage door gaps. But you likely will have to have flood vents like SteelPE was discussing, see the attached document.