First implementation of refresh token.

backend/rest-client-collection/Codiki/Users/Refresh token.bru

@@ -0,0 +1,11 @@
+meta {
+  name: Refresh token
+  type: http
+  seq: 4
+}
+
+post {
+  url: {{url}}/api/users/refresh-token
+  body: none
+  auth: none
+}