Consider using the `bin` field from `package.json` for specs derived from `NodeModuleSpec`

[jtpio]

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Elevator Pitch

Originally discussed in https://github.com/jupyter-lsp/jupyterlab-lsp/pull/1064.

Currently NodeModuleSpec specs use the scripts field, for example: https://github.com/jupyter-lsp/jupyterlab-lsp/blob/18d5c8c2e068f63141ddba6339c1cb4173c96341/python_packages/jupyter_lsp/jupyter_lsp/specs/typescript_language_server.py#L7

Motivation

Package maintainers might rename underlying files (as noticed in #1064).

Reusing the script referenced by the bin field might prove more reliable over time.

Design Ideas

Maybe some unknown as to what would happen if there are multiple bin entries.