Backup Contacts

### Describe the problem

Backup Contacts Export as html and Markdown list

### Describe the solution you'd like

```
# Contacts
1. 
2. 

# Room
1. [Cinny](https://matrix.to/#/#cinny:matrix.org)
2. 

# Space
1.
```

### Alternatives considered

_No response_

### Additional context

_No response_