fix: plugin-vue dev scripts error in ssr-vue

[zhangyuang]

Description

In packages/plugin-vue which use tsc transform ts=>js in development and use esbuild compile all dependencies as one file.

Because https://unpkg.com/browse/slash@4.0.0/index.js only export esmodule file which cause require("slash") error in some file convert from tsc in ssr-vue playground.

So, i change plugin-vue dev scripts to use esbuild --watch and tsc parallelly

Additional context

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What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

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• 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.

[zhangyuang]

cc @sodatea @Shinigami92 @antfu

[zhangyuang]

@patak-js can review it?