[FEATURE]: Implement presence states (Online, Idle, DND, Invisible)

### Feature and its Use Cases

Implement presence states (Online, Idle, DND, Invisible) and availability logic to manage incoming calls at both UI and signaling levels.

### Additional Context

This will increase the UX of the app by making the app more intuitive and engaging

### Code of Conduct

- [x] I have joined the [Discord server](https://discord.gg/hjUhu33uAn) and will post updates there
- [x] I have searched existing issues to avoid duplicates