clean up up cache dirs on rootDir/hash change

[danielroe]

we've had a number of issues tied back somehow to cache not being properly invalidated, such as when a project directory is moved or renamed, a transform is updated within nuxt, or a downstream package is updated. These seem to tie back to invalid caches.

Vite already invalidates its cache in certain conditions:
https://github.com/vitejs/vite/blob/ed0286186b24748ec7bfa336f83c382363a22f1d/packages/vite/src/node/optimizer/index.ts#L1034-L1055

This issue is to track the possible causes of cache failure and invalidate them ourselves.

Possibly related: #14585

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Current solution: Run npx nuxi-edge@latest cleanup after dependency upgrades and before nuxt dev manually to ensure caches are cleaned up.