add connect game to hackathon page

sites/main-site/src/content/events/2024/hackathon-barcelona.mdx

@@ -488,6 +488,16 @@ Special prizes are up for grabs for the winners!
 
 More details will be revelealed at the start of the event, but you can expect: a quiz, bingo and sock-related activities.
 
+## Connect game
+
+While waiting for tests to pass, why not play a quick game?
+
+In the game you have to match three of the same symbol. Don't forget to post your highscores in the [#connectgame](https://nfcore.slack.com/archives/C07TNL7M1PF) channel on slack!
+
+:::tip
+Be sure to also check out the soundtrack! :headphones:
+:::
+
 # Helpful resources
 
 ## Bytesize talks