[material-ui][Accordion] Deprecate *Props props and classes for v6

[DiegoAndai]

Part of: #40417

Review accordion-related components:

• Accordion: Add deprecations for transition props and the slots API that should replace it.
• AccordionActions: No changes
• AccordionDetails: No changes
• AccordionSummary: Deprecate contentGutters class

Because this is the first deprecations PR, it also adds slot pattern utils developed for Joy UI. This is done as the slots pattern will replace the *Props and *Component type props.

Questions for reviewers

• I took the slot utils from Joy with minor modifications. Something I'm unsure about is the following: Joy's useSlot adds common slot props component and sx. I kept this as it applies to Material UI, but I was unsure whether to do it.
• I left more questions in the code.
• Are there any other deprecations we should add to these components?

[mui-bot]

Netlify deploy preview

• docs/data/material/components/accordion/accordion.md

@material-ui/core: parsed: +0.19% , gzip: +0.28%

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[mnajdova]

Overall looks good. I left few comments for consideration. I would recommend chane the title to: "[material-ui][Accordion] Deprecate *Props props and classes for v6" and scope the changes to only these in all components. If we see other thins for deprecation we could be opening separate pull requests (in case if we find issues it would be easier to revert).

[siriwatknp]

👏 Awesome!