Improve demos macOS content

[chicio]

Is your feature request related to a problem? Please describe.
Improved demos macOS to test as much possible features of ID3TagEditor.

Describe the solution you'd like
Add a much more complex UI to the macOS demo in order to show/edit all the ID3Tag frame supported by ID3TagEditor.

Additional context
See Demo macOS xcodeproj.

[shreshth6]

Hello, I am beginner in swift but I would like to try contribute to your project, if you can tell me a bit clearly what I have to do I will be on it and deliver you the results as soon as possible.

[chicio]

Hi @shreshth6, and thank you for your support.
This was a generic ticket that I open-end to remember to me what we have to do. We can reduce the scope and start with one of the demo project contained in the ID3TagEditor: the macOS demo.
You have to add a UI to the demo macOS app that let us display and edit all the ID3 frames supported by ID3TagEditor. This basically means that the app should be able to read and write all the frame supported (see https://www.fabrizioduroni.it/ID3TagEditor/Enums/FrameName.html). Is it more clear?

PS remember to start the ⭐️ repository ⭐️ to support my work!!!

[chicio]

FYI: I'm going to merge a big refactoring on master in a few moments. Align your branch/fork before going on with the development.