Add find PIS by code functionality

Signed-off-by: Fred Boniface <fred@fjla.uk>

src/utils/sanitizer.utils.js

@@ -8,6 +8,10 @@ function removeNonAlpha(inputString) {  // Should be able to replace sanitizer m
   return inputString.replace(/[^a-zA-Z]/g, '');
 }
 
+function removeNonNumeric(inputString) {
+  return inputString.replace(/[^0-9]/g, '');
+}
+
 const cleanApiEndpointTxt = removeNonAlpha;
 const cleanApiEndpointNum = removeNonAlphanumeric;
 
@@ -26,6 +30,7 @@ module.exports = {
   cleanApiEndpointNum,
   removeNonAlpha,
   removeNonAlphanumeric,
+  removeNonNumeric,
   cleanNrcc,
   getDomainFromEmail,
 };