Use FreeBSD's setproctitle(3) to pass -procname similar to daemon(8)

[michael-o]

Default setup:

65296 root        52   0 12920  2556 S   0.0  0.0  0:00.00 jsvc: jsvc.exec[65297]
65297 ldacafe     52   0 32.7G  144M S   4.8  0.1  0:03.05 └─ /usr/local/bin/jsvc -java-home /usr/local/openjdk8 -server -user ldacafe -umask 0027 -pidfile /var/run/tomcat_scs.pid -wait 60 -outfile /usr/local/ld

with custom name:

66310 root        52   0 12920  2556 S   0.0  0.0  0:00.00 jsvc: tomcat_scs[66311]
66311 ldacafe     52   0 32.7G  166M S  22.4  0.1  0:03.70 └─ /usr/local/bin/jsvc -java-home /usr/local/openjdk8 -server -procname tomcat_scs -user ldacafe -umask 0027 -pidfile /var/run/tomcat_scs.pid -wait 60 -

daemon(8):

62874 matthias    20   0 12804  1136 S    0.0  0.0  0:01.23 └─ daemon: konaworker[62875]
62875 matthias    52   0 59748  6524 S    0.0  0.0  0:00.02    └─ /usr/local/bin/uv run --no-sync celery -A kona worker -l INFO