feature: added installation command and service files

init/s6/log/run

@@ -0,0 +1,2 @@
+#!/bin/execlineb -P
+exec -c chpst -u omnisearch:omnisearch s6-log -d 3 /var/log/omnisearch

init/s6/run

@@ -0,0 +1,3 @@
+#!/bin/execlineb -P
+foreground { s6-setsid -g }
+exec -c chpst -u omnisearch:omnisearch /usr/bin/omnisearch