feat: delete resource block

[FBalint]

Add DeleteResource Block

Adds a reusable confirmation dialog for destructive delete actions with type-to-confirm validation.

Key Features

• Type-to-confirm: Users must type exact resource name to enable deletion
• Copy helper: Click-to-copy button for resource name with visual feedback
• Error handling: Built-in error message display
• Loading states: Disables inputs and shows spinner during deletion
• Case sensitivity: Optional case-insensitive matching

Changes

• New DeleteResource block component with full TypeScript types
• Fixed Dialog responsive behavior (mobile overflow issues)
• Added documentation page and interactive demo