Filter for panoramic streetlevel images

[joecaruso]

Similar to #4518 it would be nice if there was an option to filter for only panoramic (360) images. These images should (ideally) be higher quality and more useful for mapping so it would be nice to be able to easily see where they're available, which can be more difficult is high coverage areas.

[BjornRasmussen]

I was about to create an issue for this, because of the vast amount of street level imagery that @joecaruso has been collecting in our area. 😁 Anyway, in our area, Mapillary coverage looks like this:

... so selecting only the newer 360 photos to view can be very difficult without zooming in a bunch. Could a small checkbox be added along with #5913 to help with this issue?

[quincylvania]

I added the photos section and pano filter options!