[FEATURE]: add .nvmrc

[aplanchamp]

✨ Description

The node version that should be used is specified in the documentation already, but it would be better to provide a .nvmrc at the root level.

🚀 Motivation

This will improve DX. This way developers will only have to run the command nvm use to use the correct node version.

📝 Proposed Solution

Simply create a .nvmrc at the root level and fill it with the right version number (for instance v18.17.1)

🔄 Alternatives

N/A

📸 Screenshots

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💻 Environment

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📝 Additional Context

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🔗 Relevant Links (if any)

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