Replace pflag with cobra, add service command (#17)

* Replace pflag with cobra, add service command

moved '-c' option to 'edit' command

* Restart after installation & add some friendly outputs

* Attempt to fix ci

* Update dependencies & revert gosec to 2.19.0

gosec 2.19.0 is the last version supports Go 1.20

* Remove gosec checks

.gitignore

@@ -1,3 +1,4 @@
 .DS_Store
 /agent
+/cmd/agent/agent
 *.pprof