carousel shall find all images from given folder

[alealvisi]

currently we specify images one by one in he front matter... this should be automated

[cooked]

possibly using collections is a good idea?...needs to investigate more...

https://stackoverflow.com/questions/74039848/include-images-in-jekyll-collection
https://jekyllrb.com/docs/collections/

https://github.com/sillylogger/jekyll-directory