feat: add stderr log functions

plugins/common/functions

@@ -150,6 +150,11 @@ dokku_log_fail() {
   exit 1
 }
 
+dokku_log_stderr() {
+  declare desc="log stderr formatter"
+  echo "$@" 1>&2
+}
+
 dokku_log_event() {
   declare desc="log dokku events"
   logger -t dokku-event -i -- "$@"

plugins/common/log.go

@@ -54,3 +54,8 @@ func LogVerboseQuiet(text string) {
 func LogWarn(text string) {
 	fmt.Fprintln(os.Stderr, fmt.Sprintf(" !     %s", text))
 }
+
+// LogStderr is the stderr log formatter
+func LogStderr(text string) {
+	fmt.Fprintln(os.Stderr, text)
+}