Initial implementation for the docs site and setup for LLM Compressor

[markurtz]

SUMMARY:

LLM Compressor docs website enablement using mkdocs. Additionally, docs structure and required pages have been populated as a starting point.

Docs are available at https://vllm-project.github.io/llm-compressor/ currently, they will be deployed to https://docs.vllm.ai/projects/ through vLLM's read the docs setup utilizing the .readthedocs.yaml file.

To run locally:

pip install -e ./[dev]
mkdocs serve

To build locally:

pip install -e ./[dev]
mkdocs build

TEST PLAN:

Manual testing

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