systemd service: support config reload
As per https://man.archlinux.org/man/tinyproxy.8#SIGUSR1, tinyproxy supports reloading its config file via SIGUSR1.
Wire this up so that "systemctl reload tinyproxy" works.
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As per https://man.archlinux.org/man/tinyproxy.8#SIGUSR1, tinyproxy supports reloading its config file via SIGUSR1.
Wire this up so that "systemctl reload tinyproxy" works.