[Feature Request]: Work on the Merch section of the application

### Is your feature request related to a problem? Please describe.

- Currently the app just support selling tickets for the event.
- We need to add a way with which we can sell merch on the app.
- Either create complete seperate everything or need to figure how to do these things.

### Describe the solution you'd like

Need to be thought

### Describe alternatives you've considered

_No response_

### Developer Help

_No response_