fix(plugin-vue): support external import URLs for monorepos

[Kolobok12309]

Description

Currently vue-plugin ignore watcher and use default vite config for it (root without node_modules), it not worked for monorepo's. And hmr not worked for shared script/style with src like this, but worked for .vue (reason later)

// node_modules/shared/index.vue
<template>
  <div> foo</div>
</template>

<script src="./index.ts"></script>

// node_modules/shared/index.ts
export default defineComponent({
  ...
})

In contrast of this internal vite-esbuild plugin add imports to watcher (because of it .vue hmr worked, because it imports from ts/js)

fix #397

Additional context

By default vite doesn't support hmr for node_modules, we enable it by vitejs/vite#8619 (comment)

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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 PR Title 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.

[pkg-pr-new]

Open in Stackblitz

npm i https://pkg.pr.new/@vitejs/plugin-vue@524

npm i https://pkg.pr.new/@vitejs/plugin-vue-jsx@524

commit: 521e71a

[edison1105]

LGTM