Segment Lab Explore gallery by experimental phase

[tkaragianes]

Summary

This makes the lab page easier to understand, highlighting the labs that are currently accepting submissions and giving context for other labs based on their phase in the experimental pipeline.

Before:

After:

Implementation Notes

The LabExplore page now uses a computed property to segment the labs by experimental phase, and displays the lab cards in collapsible sections. Any lab without an experimental phase or that is older than 2 years (just a suggested timescale, can easily adjust) is placed into an "Archived" section, as some old labs are paused at various stages of the experimental pipeline.

Testing

Visually verified on local environment.

Related Issues

Closes #94.