Run multiple dev servers in parallel

[dotnize]

The current dev script in root package.json uses --recursive to run all dev scripts from all packages (in cases where other packages have their own dev scripts) - but runs them sequentially and not in parallel.

blockers:

• feat: --concurrency-limit and --parallel voidzero-dev/vite-task#309

[dotnize]

implemented in ec76b62, but just via pnpm for now, not Vite Task