Example using Svelte 5 runes for state management

[oliverturner]

Description

Demonstrates how the browser.storage API allows different parts of the extension share state and reflect activity on the current page.

• The page at http://localhost:3000 fires a "counter:updated" event every second.
• The Content Script handles these events by pushing the event payload into session storage.
• The CounterState class watches the store and updates its reactive state property on change
• App.svelte reflects the value of counterState.state

It's inspired by the existing Custom Svelte Store example, but using Svelte 5 and runes, addressing #14

Additionally demonstrates how to communicate with the active page.

Note

This PR updates the local versions of Vite and WXT, which triggers warnings for other examples expecting different versions. This issue is resolved by #22

[aklinker1]

Looks good! One small change and we'll get this merged.

Edit: Also looks like you need to fix conflicts in the lockfile. git fetch && git merge origin/main && git checkout origin/main pnpm-lock.yaml && pnpm i --ignore-scripts should do all that for you

[aklinker1]

Delete this file. Looks like it's a leftover from running npm i