Is There A Script in The Works, Or anything you can hint to, To Make An undead Rise When and where a player Falls?

Maybe possibly That player Becomes the undead?

Atleast Would it be possible to Raise a Zombie upon death And Perma-Death a Char?

As far as scripts to raise people as undead go, we'll eventually get them done by having people use "animate dead" on a players corpse, so yeah, you'll eventually be able to turn people into zombies.

As far as permadeathing people you raise though - no way. Nobody has the right to arbitrarily exterminate a players character, unless there's a reason, the player agrees to it, and the DM's agree to enforce it (well, suppose you could mix and match any two of those)