add str_before and str_after

modules/scripting/helpers.lib

@@ -1,4 +1,13 @@
 #!/bin/bash
+
+str_after () {
+echo "$1" | cut -s -d "${2:-=}" -f2 
+}
+
+str_before () {
+echo "$1" | cut -s -d "${2:-=}" -f1 
+}
+
 # must be json as a string, depends on jq
 get_prop_value () {
     local value
@@ -83,3 +92,4 @@ sed_ignore_comments () {
         eval $cmd < /dev/stdin
     fi
 }
+