Add visual indication to easily differentiate between requests

[georgknabl]

Why this is important:
Running several requests with multiple ray() calls each, it is hard to differentiate between calls on later runs. Thus, it'd be great to quickly distinguish between them.

How to solve this?
An easy way would be to add a button to the UI that allows the user to clear the logs. Additionally, to prevent manual interaction, a visual indicator (e.g. a red line) could be added after a certain time threshold, stating the time between ray() calls. This threshold is configurable by the user and defaults to the time of a typical HTTP request plus buffer, e.g. 1 second.

[georgknabl]

Just found out, there is a shortcut (Cmd + Shift + K) to clear the logs. A button would still be nice.