Adapt latest changes in Tauri v2 Beta

[reyamir]

No description provided.

[kareemmahlees]

@oscartbeaumont anything stopping this from being merged ? I would love to help as I am currently stuck with compile errors because tauri-specta is locked to an older version of tauri!

[Brendonovich]

I think these implementations should use Emitter and Listener instead of Manager, I'll get it fixed up then this can be released after we fix tauri's specta integration

[oscartbeaumont]

(The latest Tauri releases bumps the minimum Specta version due to a bug so both need to be upgraded and Specta went through some major breaking changes)

Blocking merge:

• Fix error handling (will require more work in Specta's core since we dropped DataType::Result)
• Get examples running (it's saying 404 index.html for no clear reason)
• Fix plugin example
• Release Specta with fixes & drop patches to my local filesystem + bump version again

I will hopefully get this stuff sorted in the next couple of days.