Heltec T114 custom/bigger H2T case

Made the bottom case a bit bigger to accommodate an 2000mAh battery and widened the screw hole to allow for a threaded insert and changed the front and buttons to allow for the insertion of the Heltec T114 with its protective plastic casing (so there is no more disassembly required). update 1/10/2024: increased the strength of the inside retention clip