Added jq

Signed-off-by: Oleg Bulatov <oleg@bulatov.me>
Use 'discover' for ensure_* packages

Signed-off-by: Oleg Bulatov <oleg@bulatov.me>
Added jq install script

Signed-off-by: Oleg Bulatov <oleg@bulatov.me>
Use hm-make v2

Signed-off-by: Oleg Bulatov <oleg@bulatov.me>