Integration with Tracing crate

[nitisht]

It would be nice to integrate with https://github.com/tokio-rs/tracing this way Parseable can store and query application traces.

[123vivekr]

@nitisht Is this still open? I'd like to work on this.

[nitisht]

We'll deprioritise this for now @123vivekr . would you like to take up #165

[nitisht]

closing this for now