feat(cli): Create & add one go

[kizivat]

This should resolve #689 .

1. solves an issue where canceling the CLI while selecting add-ons, the project is still crated
2. it adds --add variadic option to create enabling specifying add-ons during project creation

Point 1. is solved by separating the question prompting and applying add-ons in the add script. Both are reused in the create action handler.

I'm creating this as a draft PR to receive general direction before solving // TODO_ONE:s.

[changeset-bot]

🦋 Changeset detected

Latest commit: e66e861

The changes in this PR will be included in the next version bump.

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[jycouet]

Thank you for the initial work.
Let's speak over the different comments.

[jycouet]

Hello @kizivat do you want to puch forward this PR? or should I try to bring it to the finish line ? :)
Let me know 👍

[pkg-pr-new]

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commit: e66e861

[jycouet]

I'm not sure why svelte.dev is not having a preview. Any idea @manuel3108 ?