Add multi-step form Hurl workflow

Author: lovasoa

examples/forms-with-multiple-steps/test.hurl

@@ -0,0 +1,33 @@
+GET http://localhost:8080/hidden/step_1.sql
+HTTP 200
+[Asserts]
+body contains "name"
+body contains "step_2.sql"
+
+POST http://localhost:8080/hidden/step_2.sql
+[FormParams]
+name: Hurl User
+HTTP 200
+[Asserts]
+body contains "Hey Hurl User! what is your email?"
+body contains "step_3.sql"
+
+POST http://localhost:8080/hidden/step_3.sql
+[FormParams]
+name: Hurl User
+email: hurl@example.com
+HTTP 200
+[Asserts]
+body contains "How old are you, Hurl User?"
+body contains "finish.sql"
+
+POST http://localhost:8080/hidden/finish.sql
+[FormParams]
+name: Hurl User
+email: hurl@example.com
+age: 42
+HTTP 200
+[Asserts]
+body contains "Welcome, Hurl User!"
+body contains "Existing users"
+body contains "hurl@example.com"