docs: add Render deployment instructions

[metonym]

Description

This PR adds instructions on deploying a Vite app as a static site to Render.

Additional context

Disclosure: I work at Render.

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What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

Before submitting the PR, please make sure you do the following

• Read the Contributing Guidelines.
• Read the Pull Request Guidelines and follow the Commit Convention.
• Check that there isn't already a PR that solves the problem the same way to avoid creating a duplicate.
• Provide a description in this PR that addresses what the PR is solving, or reference the issue that it solves (e.g. fixes #123).
• Ideally, include relevant tests that fail without this PR but pass with it.

[patak-dev]

Thanks for the PR @metonym, in case you are interested, there is a similar page in the VitePress docs: https://vitepress.vuejs.org/guide/deploying.html

[metonym]

@patak-dev Excellent – thank you.