feat: use cmake instead of node-gyp

[giladgd]

Description of change

Use cmake via cmake-js to build llama.cpp from source instead of node-gyp.

cmake-js has multiple advantages over node-gyp for node-llama-cpp:

• llama.cpp itself uses cmake, so using cmake here will be better align with llama.cpp and will be able to support all of its features
• cmake doesn't use python, so there won't be any need to mess with python installations anymore just to compile llama.cpp from source
• cmake has less dependencies, thus making it more practical to use
• If cmake is not installed on the local machine, the cmake binary will be downloaded to an internal directory so node-llama-cpp can use it without even having it installed.

Since the dependencies of node-gyp cover the dependencies of cmake, and this PR fallbacks to downloading cmake in case it's not installed on the user's machine, this is not a breaking change, the version of node-llama-cpp can be bumped by only a minor version.

Pull-Request Checklist

• Code is up-to-date with the master branch
• npm run format to apply prettier formatting
• npm run test passes with this change
• This pull request links relevant issues as Fixes #0000
• There are new or updated unit tests validating the change
• Documentation has been updated to reflect this change
• The new commits and pull request title follow conventions explained in CONTRIBUTING.md (PRs that do not follow this convention will not be merged)

[ido-pluto]

LGTM

[github-actions]

🎉 This PR is included in version 2.4.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release
• v2.4.0

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