feat: add restart-on-add-unlink vite plugin

[yusukebe]

Fixes #54

[arisris]

I am not sure off any other but by adding watch to /app/**.

honox/src/vite/restart-on-add-unlink.ts

Line 7 in 4bba957

server.watcher.add('/app/**')

in bun when "bun run --bun vite dev" it cause error and forced exit.
i removed this line and try it just work

i hope you can fix this issue.