Add more links to homepage


https://github.com/svelte-society/sveltesociety.dev to help report issues with the site itself
https://bsky.app/profile/sveltesociety.dev and maybe other socials like yt channel?

And some links to other sites in the svelte ecosysetm maybe
https://svelte.dev
https://sveltelab.dev
https://svelte-changelog.dev/

