chore: add .node-version

[alexzhang1030]

Let node version managers auto-switch to lts-latest node version.

[netlify]

✅ Deploy Preview for vue-devtools-docs canceled.

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[pkg-pr-new]

Open in Stackblitz

@vue/devtools-applet

pnpm add https://pkg.pr.new/@vue/devtools-applet@602

@vue/devtools-core

pnpm add https://pkg.pr.new/@vue/devtools-core@602

@vue/devtools

pnpm add https://pkg.pr.new/@vue/devtools@602

@vue/devtools-api

pnpm add https://pkg.pr.new/@vue/devtools-api@602

@vue/devtools-kit

pnpm add https://pkg.pr.new/@vue/devtools-kit@602

vite-plugin-vue-devtools

pnpm add https://pkg.pr.new/vite-plugin-vue-devtools@602

commit: a5d79aa