Add icons to digital exhibition guides listing page

[LaurenFBaily]

What

Update design of exhibition guides listing page (this page which displays cards for all current exhibition guides) to include icons as per designs

Screenshot as example, to be replaced with link to designs:

Icons logic: AD = Audio highlight tour is available TEXT = Always shows, as applicable to Exhibition text guide being available and/or transcripts as part of audio/video content BSL = BSL video highlight tour is available

Why

To indicate what resources are available (audio description, BSL, ) as these vary depending now that we allow Exhibition text without a highlight tour for example.

Background

Part of Improve usability of exhibition guides

Done when

[kasiabbb]

see design on Figma, Key Screens space

[rcantin-w]

@kasiabbb this is now in prod behind the toggle. I also added the missing icons on this page https://wellcomecollection.org/guides/exhibitions/Zdcs4BEAACMA6abC (we originally said we'd wait but it's behind the toggle anyway so I went ahead with it).

Feel free to close ticket or add comments if anything is amiss!

[kasiabbb]

slight issue here @rcantin-w - the icons should be in line with the arrow, and ideally the card's padding should be equal from each side (right now it is different for left and bottom)

[rcantin-w]

Fix in prod for @kasiabbb to review

[kasiabbb]

@rcantin-w one final thing - the padding should be consinstent across the pages, at the moment it is consistent on desktop but not on mobile (screens attached). Could we please have it at 8x16x16 on both pages? that seems to be consistent across other pages

[rcantin-w]

@kasiabbb ready for further review