feat(oxc): add oxlint setup launcher

[yuyinws]

Description

This PR adds an Oxlint setup flow to Oxc DevTools when Oxlint is not installed.

• If an ESLint flat config is detected, it shows a Migrate from ESLint action (use oxlint-migrate).
• Otherwise, it shows an Install Oxlint action.

migrate-from-eslint.mp4

install-oxlint.mp4

Linked Issues

Close #498

Additional context

[pkg-pr-new]

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@vitejs/devtools

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@vitejs/devtools-kit

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@vitejs/devtools-oxc

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@vitejs/devtools-rolldown

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@vitejs/devtools-vite

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@vitejs/devtools-vitest

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commit: d380058