feat(autocomplete): Implement autocompletion

### 🔖 Feature description

Discord has introduced [autocomplete for certain /-Command interactions](https://discordjs.guide/slash-commands/autocomplete.html#enabling-autocomplete). This could help bring better UX to our users

### ✔️ Solution

```[tasklist]
### Tasks
- [ ] Implement some structure for autocomplete usage as described above
``` 