[Question] about adding DIY variants "TWC_mesh_v4" as target device

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HI, web-flasher is a great project I use it for almost all my Meshtastic devices. it's really easy and Intuitive to use

we have a self-made variant called TWC_mesh_v4: https://github.com/meshtastic/firmware/tree/master/variants/TWC_mesh_v4 I was wondering if there's a chance we can add this variant to the current target device?

if so, what do I have to do / add ? just trying to understand how it works before making a pull request blindly.

Thanks for the project! really appreciate a good tool like this.