Refactor python codes from exercises,assginments and lectures into single resource folder.

Currently the python template code that is pasted into a `code/hwX/` folder is contained three times in this repository.
It is here:
https://github.com/a-t-0/CoursePlanningTemplate/tree/master/CoursePlanningTemplate/processPlanning/assignmentTemplateResources/python

and here:
https://github.com/a-t-0/CoursePlanningTemplate/tree/master/CoursePlanningTemplate/processPlanning/exerciseTemplateResources/Python

and here:
https://github.com/a-t-0/CoursePlanningTemplate/tree/master/CoursePlanningTemplate/processPlanning/lectureTemplateResources/Python

The codes should be refactored into a single folder which are picked up and placed in the assignment/exercise/lecture folders respectively if such a tasks requires python according to the https://github.com/a-t-0/CoursePlanningTemplate/blob/master/CoursePlanningTemplate/PlanningData-Form-Temp.ods.