Added sort buttons on trace view

[evalphobia]

This PR sort feature on trace view.

1. sort order by starting_time
2. sort order by ending_time
3. sort order by latency (added new filed)
4. sort order by label (alphabetically)

Each sort is worked as ascending order first click and descending order by clicking same button.

[slimsag]

This looks really great!

I left some comments inline, and let's change the wording slightly:

• Rename latency to duration (we use span duration elsewhere in the code, so this is more accurate IMO).
• Rename alphabet to label (because it's sorting by span label, this makes more sense / matches other UIs for sorting)

Apologies for the delay on reviewing this!

[evalphobia]

@slimsag thank you for reviewing! I just fixed the code :baby_chick:

[slimsag]

Thanks for the awesome contribution @evalphobia ! :sparkles: