Switch to native file handling for Docker on macOS

[kdambekalns]

Modern Docker file mount implementations on macOS are fast enough to be usable directly.

This is needed to use this:

• remove devkit with the file sync we have in place
• mount files directly

To get this to the users, we need to

• adjust the shipped docker compose template
• find a way to cleanly migrate existing .localbeach.docker-compose.yaml files
• restart projects without data loss

[kdambekalns]

To use native file mounts in a Local Beach project, adjust .localbeach.docker-compose.yaml as follows:

• remove the devkit service definition
• remove the application volume definition
• replace the volumes section content on the webserver and php services with just - ./:/application
• in the php service environment section, set BEACH_WAIT_FOR_SYNC=false

[kdambekalns]

Meanwhile VirtioFS is no longer experimental, delegated is a no-op, … this should progress at some point.

Only pitfall: it still seems slower than the old devkit-approach, at least for some. See https://github.com/neos/Neos.NeosIo/issues/473

[kdambekalns]

This has been (partly) addressed by #70, thanks to @ahaeslich!

[kdambekalns]

Aside from the adjusting of existing projects still using devkit, this is done. And that remaining task is something for #60 to solve…