feat: implement Toolbar

[adrcotfas]

• Implement the new component according to specs: https://m3.material.io/components/toolbars/overview
• Reuse newly introduced tokens (shape, motion, typography, color etc)
• Extract component specific tokens for easier maintenance
• Get inspired from TextInput/TextField, Switch, Checkbox, FAB components which have gone through modernization
• Showcase the component in the example app
• Update the documentation