Upgrade to Svelte 5.0

[Greenfoot5]

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So, I've tried to upgrade everything, but have little experience with the project, so it's mainly me updating version numbers with some trial and error until it compiles.

What has been done?

• Ran the Svelte upgrade script
• Gone through each dependency and upgraded to the latest.
  • I know not the best, but I had another issue I thought was related to something being out of date
• Checked it built and svelte-kit app works
• I have moved from an older template to the vite + ts + svelte demo. The old one version was outdated, and the template has been archived.
• I have updated the patch version number, I'm not sure if this should be 3.2.0 or 4.0.0, and set the patch to show it's different from previous.

Known Issues

• [ ] I haven't extensively tested it (especially with other dependencies)
• [x] Svelte app doesn't compile. There's a circular import I haven't debugged
• [x] createEventDispatcher and afterUpdate are utilised still in Particles despite being depreciated.
  • I could do with some help here as I'm not sure how best to migrate this.
• [x] I'm not sure if I should be able to click the elements behind in the svelt-kit demo

Any assistance would be lovely in helping make this all works correctly. My next step is to try and get apps/svelte working