feat: add the ability to specify a custom mailto for all cron output

plugins/cron/report.go

@@ -13,6 +13,7 @@ func ReportSingleApp(appName string, format string, infoFlag string) error {
 	}
 
 	flags := map[string]common.ReportFunc{
+		"--cron-mailto":     reportMailto,
 		"--cron-task-count": reportTasks,
 	}
 
@@ -27,6 +28,10 @@ func ReportSingleApp(appName string, format string, infoFlag string) error {
 	return common.ReportSingleApp("cron", appName, infoFlag, infoFlags, flagKeys, format, trimPrefix, uppercaseFirstCharacter)
 }
 
+func reportMailto(_ string) string {
+	return common.PropertyGet("cron", "--global", "mailto")
+}
+
 func reportTasks(appName string) string {
 	c, _ := FetchCronEntries(appName)
 	return strconv.Itoa(len(c))