Add support for Teltonika RUTC50

I'm writing to request support for the Teltonika RUTC50, a high-performance 5G router that I believe would be a valuable addition to the OpenWrt ecosystem.

The RUTC50 (https://teltonika-networks.com/products/routers/rutc50) is currently unsupported, but its lower-spec sibling, the RUTX50 (https://teltonika-networks.com/products/routers/rutx50), gained support through this commit: https://git.openwrt.org/?p=openwrt/openwrt.git;a=commitdiff;h=897d55bcdf864f4d40cf50396b963ca240bbc1fc

Given the similarities between these models, adding support for the RUTC50 might be feasible using the existing RUTX50 implementation as a starting point.

I'm reaching out hoping that someone with this device and the necessary expertise might be willing to take on this project. It would be great to see if others in the community are also interested in support for the RUTC50. I'd really appreciate any help with this effort!

There is one firmware for rut, other for rutx and another for rutc. Unless you find evidence {f opposite those are completely different platforms.