csiCursorPositionHandler function
CUP - Cursor Position
Implementation
void csiCursorPositionHandler(CSI csi, Terminal terminal) {
var x = 1;
var y = 1;
if (csi.params.length == 2) {
y = csi.params[0];
x = csi.params[1];
}
terminal.buffer.setPosition(x - 1, y - 1);
}