MPCNC JST 2.54 endcap

So I bought stepper motors without an onboard(?) connector. Building was easy, but when doing maintenance or implement an upgrade it is not easy to redo the complete wiring each time. I've seen examples of using RJ45 connector, it looks good, but I have no spare RJ45 connectors. What I do have are [JST 2.54 connectors](https://www.aliexpress.com/item/Free-Shipping-100-Sets-JST-2-54mm-SM-4-Pin-4-Way-Multipole-Connector-plug-With/32576792270.html). So I designed fitting endcaps for these connector