feat(tabs): add tabs component with documentation

[januantara]

• Add Tabs, TabsList, TabsTrigger, and TabsContent components (first variant: "line tabs")
• Add dark mode support with CSS variables
• Include documentation with usage examples

[vercel]

@januantara is attempting to deploy a commit to the devswithme's projects Team on Vercel.

A member of the Team first needs to authorize it.

[devswithme]

Thanks Januantara for contributing the tabs component!