[Feature request] make arrow size customizable

[FedeTommi]

Would it be possible to add a new prop "arrowSize" to change the size of the arrow? like so:

.${uuid}.place-bottom::after {
       border-left: ${arrowSize}px solid transparent;
       border-right: ${arrowSize}px solid transparent;
       top: -6px;
       left: 50%;
       margin-left: -${arrowSize}px;
       border-bottom-color: ${arrowColor};
       border-bottom-style: solid;
       border-bottom-width: 6px;
   }