Architecture.md documentation file

[clarkeben]

Is your feature request related to a problem? Please describe.
Documentation is required to provide contributors with additional details surrounding the app. An architecture.md file is required to have all the necessary details.

You can find the Architecture file here - https://github.com/Shubham0812/HabitTracker_UI/blob/main/docs/Architecture.md

It has half of the basic information, you have to complete the rest.

Describe the solution you'd like
Here are some highlights worth covering:

• MVVM design pattern
• Any other logic worth highlighting

The file should be used as a reference point to new developers joining the project.

Describe alternatives you've considered
The contributor will need to go through the current Xcode file and take note of the structure. Where possible please use screenshots or diagrams. The contributor should understand how MVVM works, but also be able to explain it.