[RayCluster] Introduce how to run ray remote job with ray client

[0yukali0]

Description

Expected results

In target doc, appending a method 3 note aray client link and an example in the doc.

method 1:
method 2:
ray client(method 3):
ray client link
python -c "import ray; ray.init("ray://<raycluster head>:10001"); print(ray.cluster_resources())"

software version

ray: 2.9.0
python:3.8.18
kuberay: 1.1.1
kind: 1.26.0

Env i demo

#local python env
conda create env -n demo python=3.8.18
conda activate demo
pip install "ray[all]"==2.9.0

### Link

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