Implemented settings page and better error handling

[adi790uu]

fixes: #312

1. Improves the structure of backend code and implemented better error handling.
2. Implements Settings Page
3. Improvement in Play Card UI
4. Schema changes added on Delete Cascade.

result video :

Screen.Recording.2024-05-09.at.4.40.00.PM.mp4

[adi790uu]

@nimit9@hkirat

[nischal-shetty2]

big pr fixing different things, try spliting it into multiple prs

[adi790uu]

@nischal-shetty2 well it would not be the best to break this into different pr's as the changes are mainly based on implementation of settings section and we need them under a single PR and other than that I have just reorganized the codebase.

[adi790uu]

I don't think it will be too hard to review this.

[nischal-shetty2]

@nischal-shetty2 well it would not be the best to break this into different pr's as the changes are mainly based on implementation of settings section and we need them under a single PR and other than that I have just reorganized the codebase.

Oo alr i didn't go through the code but you mentioned you added better error handling as well so i suggested to split that into a different pr

[adi790uu]

@hkirat can you review this PR, it's opened since a long time.