[idea] Add reasonix agent

[happysalada]

idea / problem

There is a cli agentic tool called reasonix specifically made for deepseek

requested change

I would like to add herdr support for it so that it can recognize reasonix as another agentic tool

why you want this

I use reasonix quite a bit since it's a lot cheaper than other providvers

PS: I made a PR for it that was closed immediately #4865

[m-ocean-it]

I use reasonix quite a bit since it's a lot cheaper than other providvers

Clarification for readers: Reasonix is an agentic harness (like Claude Code or OpenCode) that is optimized to hit the cache of the Deepseek (or any?) LLM-provider. Reasonix itself is not an LLM provider

And I, too, use reasonix in my daily work