Deploy: Speed up deploy process by switching to rsync / native Node.js / pm2

=> Managing deploys with rsync / native Node.js process makes the deploys faster (only a few KB to transfer instead of ~230MB for the podman image)
=> Using `next start` instead of Next.js `standalone` build allows for 15-30% performance boost (not sure why the Next.js `standalone` build mode has a slower runtime)
=> `pm2` is really nice to handle staging / prod services, and keep them running after a reboot