[IconButton][material-next] Add IconButton component

[mj12albert]

Part of #38374

Migration Steps

• Copy component files from material (v5) to material-next (PR)
• Remove deprecated components and componentsProps props
• Drop support for ThemeProvider in favor of CssVarsProvider
• Migrate component to Typescript
• Refactor component to use Base UI’s hook if it exists
• Implement Material You design specs
• Add component playground to v5 docs
• Refactor styles to use component CSS Variables

[DiegoAndai]

Once this is done, let's leave a comment in #37443 😊

[zak2273]

Hi, me and a couple of fellow classmates are looking to work on this issue and it is our first time contributing to open-source code as part of a University course. We hope to make a valuable contribution to this project! Thanks.