currently on events page, each event has only one image
we want to support a sliding gallery when the modal of an event is opened
this also requires you to edit the schema to support multiple links for an event image
also, update the addEvent mutation on admin panel and also support the same in frontend form there
also, in the admin panel of events, currently only one poster is visible, instead employ the same sliding gallery component here to show other images
Note
while working on this issue, please check if #59 and #60 are closed. if they are, then you need to handle multiple images for an event, there as well.