feat: Add inference engine - NVIDIA triton inference server and TRT-LLM

[hiro-v]

Problem
I have an existing NVIDIA triton inference server with TensorRT-LLM as backend. I want to use that model within Jan

Success Criteria

• Inference engine for nvidia Triton inference server - nvidia-inference-engine-trt-llm/engine.json
• Setup script and docs for setting up both and connection
• model.json for llama2-7b

Additional context

• feat: Multiple inference engines for nitro and openai #814
• 810 docs add modeljson and revamp models specs page #816

[hiro-v]

Diagram illustrating Jan integration with NVIDIA Inference cluster

[hiro-v]

Setup and benchmark script for NVIDIA Inference cluster with TensorRT backend (model: meta-llama/llama2-7b): https://github.com/hamelsmu/llama-inference/tree/master/triton-tensorRT-quantized-awq-batch