feat: initialize k-tv-frontend with Next.js and Tailwind CSS

- Added package.json with dependencies and scripts for development, build, and linting.
- Created postcss.config.mjs for Tailwind CSS integration.
- Added SVG assets for UI components including file, globe, next, vercel, and window icons.
- Configured TypeScript with tsconfig.json for strict type checking and module resolution.

k-tv-backend/domain/src/lib.rs

@@ -0,0 +1,19 @@
+//! Domain Logic
+//!
+//! This crate contains the core business logic, entities, and repository interfaces.
+//! It is completely independent of the infrastructure layer (databases, HTTP, etc.).
+
+pub mod entities;
+pub mod errors;
+pub mod ports;
+pub mod repositories;
+pub mod services;
+pub mod value_objects;
+
+// Re-export commonly used types
+pub use entities::*;
+pub use errors::{DomainError, DomainResult};
+pub use ports::IMediaProvider;
+pub use repositories::*;
+pub use services::{ChannelService, ScheduleEngineService, UserService};
+pub use value_objects::*;