feat: implement ps-can-scale

plugins/ps/triggers.go

@@ -6,6 +6,7 @@ import (
 	"path"
 	"path/filepath"
 	"sort"
+	"strconv"
 	"strings"
 
 	sh "github.com/codeskyblue/go-sh"
@@ -265,6 +266,11 @@ func TriggerProcfileRemove(appName string) error {
 	return removeProcfile(appName)
 }
 
+// TriggerPsCanScale sets whether or not a user can scale an app with ps:scale
+func TriggerPsCanScale(appName string, canScale bool) error {
+	return common.PropertyWrite("ps", appName, "can-scale", strconv.FormatBool(canScale))
+}
+
 // TriggerPsCurrentScale prints out the current scale contents (process-type=quantity) delimited by newlines
 func TriggerPsCurrentScale(appName string) error {
 	formations, err := getFormations(appName)