Autostart and autoenable packages

[aloisklink]

According to the OpenWRT wiki: https://openwrt.org/docs/guide-developer/packages#packaging_a_service,
when installing/removing an OpenWRT package, the package's service file is automatically enabled/disabled.

However, my very limited testing shows that this isn't the case (maybe it's a feature only in newer OpenWRT versions?)

Nonetheless, it might be worth explicitly enabling the server files, so that we can also start them too (enable starts them on reboot, start starts them immediately).

[aloisklink]

Hmmm, looks like the default_postinst should definitely be starting and enabling these services: see https://github.com/openwrt/openwrt/blob/7b07c3cff57f057d6780d34adeb23c06123732db/package/base-files/files/lib/functions.sh#L300-L303

[aloisklink]

I think this might be fixed by #19.

However, it's possible that the init scripts are failing due to

manysecured-openwrt-packages/ssh-legion/Makefile

Line 67 in 01a8f57

$(INSTALL_DIR) $(1)/etc/init.d

It may be that when running https://github.com/openwrt/openwrt/blob/7b07c3cff57f057d6780d34adeb23c06123732db/package/base-files/files/lib/functions.sh#L296, since the folder /etc/init.d/ is in the package file list, it tries to run /etc/init.d start, which fails since /etc/init.d is a directory.

I'm not 100% sure, so we'll need to test this the next time we do an install on a new OpenWRT image. (maybe it's also just our old OpenWRT 19.07's init system)