Support for pnpm v12

[Arthie]

Description

Pnpm has a released beta version for v12
It's not yet supported in vite-plus. Vite-plus needs to add compatibility due to changed install logic.
Would be great to add support before pnpm v12 is released.

Suggested solution

Testing pnpm v12 with vite-plus:

1. Bump the pnpm version in package.json to v12

"packageManager": "pnpm@12.0.0-beta.2"

2. Run command vp install and see error:

error: Failed to exec /Users/.../.vite-plus/package_manager/pnpm/12.0.0-beta.2/pnpm/bin/pnpm: No such file or directory (os error 2)

Alternative

No response

Additional context

No response

Validations

• Read the Contributing Guidelines.
• Confirm this request is for Vite+ itself and not for Vite, Vitest, tsdown, Rolldown, or Oxc.
• Check that there isn't already an issue requesting the same feature.

[fengmk2]

https://app.unpkg.com/pnpm@12.0.0-beta.0/files/install.js
The installation logic has been changed, we need to adapt it.

[jong-kyung]

@fengmk2 I'd like to look into this one 🫡