Reintroduce the Todo Demo App

[delight]

Describe the problem

The Todo app was a nice starting point for an enhanced CRUD form, which is one of the most common programming tasks for developers.
I think it is a good starting point for developers starting with SvelteKit.

Describe the proposed solution

Reintroduce the Todo App as Part of SvelteKit demo app or as an additional selection. The former is probably preferable.

Alternatives considered

At least make the svelte api available again so that the old app is still working.

Importance

would make my life easier

Additional Information

No response

[delight]

OK I guess this is discussed enough at #6979

• there is the code for the api avail at https://github.com/sveltejs/api.svelte.dev

[dummdidumm]

We will not bring it back to the demo app, but we will likely create a more fleshed out version of it somewhere else.

[dummdidumm]

We will add a version of this to https://github.com/sveltejs/sites