Meshtastic/Meshcore Desktop Node Case with 3/8" thread - XIAO nRF52840

I remixed the Micro Meshtastic/Meshcore Desktop Node (XIAO nRF52840) and added a 3/8" thread, allowing the node to be easily mounted on a tripod with a 3/8" mount. This addition improves placement flexibility and enables stable deployment, for example during measurements, coverage testing, or long term operation.

Please note that the tripod screw fits slightly tighter, so it may require a bit more force when tightening. An infill of at least 50 percent is recommended for sufficient strength and durability.

Added a 3/8" thread insert and slightly enlarged the bottom part of the model to accommodate the thread.