Creature:onMove(oldPos, newPos, isTeleport) + isAbleToMove() / canMove(bool)

new event:
Creature:onMove(oldPos, newPos, isTeleport)
could change it to (fromPos, toPos, isTeleport) aswell if requested.

new functions: (creature table)
:isAbleToWalk() -- returns true / false (depends on how canMove is set)
:canMove(bool) -- canMove(true) = creature can move canMove(false) = creature can not move
It'll reset once the player makes a relog (could be saved with a storagevalue if needed)

Has been tested on:
Monsters
Npcs
Players

It supports canceling movement by:
minimap click.
tile click.
arrow keys.
beeing moved by someone else or trying to pushmove yourself.
optional:
you can cancel movements from teleports aswell.

I've just stumbled into a little issue (where I'm not 100% sure if it's probably just client related)
When you minimap / tile click the player will continously try to move until either you click on the same tile he stands or until the player is able to move again.
Empty line here aswell, line 7841 aswell.