Improved debugging process and enabled splitting of app development into tasks and then into steps

- split step implementation into different functions
- standardized the return value in the implementation process - { "success": True }
- added propagation of errors back to the recursion level 0 with TooDeepRecursionError and TokenLimitError
- created new class Debugger and moved debugging in it

pilot/helpers/Project.py

@@ -290,4 +290,4 @@ class Project:
             if answer in cbs:
                 return cbs[answer]()
             elif answer != '':
-                return answer
+                return { 'user_input': answer }