Closes#16082.
`hermes status` silently omitted four widely-used LLM providers
(Google/Gemini, DeepSeek, xAI/Grok, NVIDIA NIM) from the API Keys
and API-Key Providers sections. Add them, along with tuple-valued
env var support (first found wins) so Google can accept either
GOOGLE_API_KEY or GEMINI_API_KEY.
Also deduplicates the "NVIDIA" and "NVIDIA NIM" rows that were
both pointing at NVIDIA_API_KEY.
Salvage of #16159 (core behavior preserved + NVIDIA dedup fixup
on top of the tuple-support refactor).
Co-authored-by: briandevans <252620095+briandevans@users.noreply.github.com>