BUG: Map is currently hardcoded for all events

## 🐛 Bug Report

### What went wrong? 🤔

All events, on the participant dashboard, have a map hardcoded. This should be instead customizable by the event organizer

### Expected Behavior

The map should be customizable for each event and shouldn't affect other events

### Actual Behavior

Currently, it is hardcoded, and when the user tries to upload a map, the upload fails because it is not declared in the graphql inputs schema

### Steps to Reproduce Issue
Login as a participant to an event and click on the map tab to see the hardcoded map