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/api/src/routes/config.rs

@@ -0,0 +1,13 @@
+use axum::{Json, Router, routing::get};
+use crate::dto::ConfigResponse;
+use crate::state::AppState;
+
+pub fn router() -> Router<AppState> {
+    Router::new().route("/", get(get_config))
+}
+
+async fn get_config() -> Json<ConfigResponse> {
+    Json(ConfigResponse {
+        allow_registration: true, // Default to true for template
+    })
+}