v2 user routes complete

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

src/configs/errorCodes.configs.js

@@ -1,4 +1,5 @@
 const statusCodes = {
+  400: 'data not found',
   700: 'no authentication attempt',
   701: 'invalid credentials',
   702: 'domain not whitelisted',
@@ -6,7 +7,9 @@ const statusCodes = {
   800: 'location code not found',
   801: 'unable to fetch location data',
   900: 'invalid request format',
+  901: 'email not provided',
   950: 'upstream server error',
+  951: 'unknown server error'
 };
 
 module.exports = statusCodes;