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/infra/src/db.rs

@@ -0,0 +1,17 @@
+pub use k_core::db::DatabasePool;
+
+pub async fn run_migrations(pool: &DatabasePool) -> Result<(), sqlx::Error> {
+    match pool {
+        #[cfg(feature = "sqlite")]
+        DatabasePool::Sqlite(pool) => {
+            // Point specifically to the sqlite folder
+            sqlx::migrate!("../migrations_sqlite").run(pool).await?;
+        }
+        #[cfg(feature = "postgres")]
+        DatabasePool::Postgres(pool) => {
+            // Point specifically to the postgres folder
+            sqlx::migrate!("../migrations_postgres").run(pool).await?;
+        }
+    }
+    Ok(())
+}