runit user service files

Various runit service files for per-user services. May need to be modified to work on your system.

Helper scripts:

log: symlink as the run script in your service's log directory to enable logging to ~/.local/log/
setup-supervise.zsh: run to create symlinks for supervise directories, so they are created in $XDG_RUNTIME_DIR
new-service: create a new service, executing the given command line. Optionally pass -l before any other arguments to also create a logging entry. Example:
```
  ./new-service -l my-daemon --foreground -a -b -c
```