chore: Reorganize project in folders

[itaybre]

This PR reorganizes the project in folders, no other major changes.

Should help new developers understand the project

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 34.305%. Comparing base (d87ffb9) to head (2577e41).
⚠️ Report is 2 commits behind head on master.

Additional details and impacted files

@@              Coverage Diff              @@
##            master      #121       +/-   ##
=============================================
- Coverage   37.053%   34.305%   -2.748%     
=============================================
  Files           11        11               
  Lines         1147      1268      +121     
  Branches       360       396       +36     
=============================================
+ Hits           425       435       +10     
- Misses         714       824      +110     
- Partials         8         9        +1     

Files with missing lines	Coverage Δ
EmpowerPlant/Helpers/ErrorToastManager.swift	20.231% <ø> (ø)
EmpowerPlant/Helpers/RandomErrors.swift	0.000% <ø> (ø)
EmpowerPlant/Helpers/Utils.swift	35.294% <ø> (ø)
EmpowerPlant/Models/Product+CoreDataClass.swift	0.000% <ø> (ø)
...powerPlant/Models/Product+CoreDataProperties.swift	100.000% <ø> (ø)
EmpowerPlant/Views/CartViewController.swift	50.898% <ø> (ø)
...mpowerPlant/Views/EmpowerPlantViewController.swift	57.627% <ø> (ø)
EmpowerPlant/Views/ListAppViewController.swift	0.000% <ø> (ø)
EmpowerPlant/Views/ShoppingCart.swift	26.190% <ø> (ø)

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[kpujjigit]

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