MK3s+ front panel, hyperpixel square brackets

Although @madalpaca did an excellent job on the front panel, the brackets didn't fit the MK3S+ due to the cable ribbon at the back of the LCD board. I've made extra space to allow the cable to fit + made adjustment to the nut as it didn't fit mine.

Finally I've made the grip a bit thicker as it was just 1 printline which otherwise easily breaks.