feat: initialize thoughts-frontend with Next.js, TypeScript, and ESLint

- Add ESLint configuration for Next.js and TypeScript support.
- Create Next.js configuration file with standalone output option.
- Initialize package.json with scripts for development, build, and linting.
- Set up PostCSS configuration for Tailwind CSS.
- Add SVG assets for UI components.
- Create TypeScript configuration for strict type checking and module resolution.

thoughts-backend/api/src/init.rs

@@ -0,0 +1,32 @@
+use std::time::Duration;
+
+use axum::Router;
+use sea_orm::{ConnectOptions, Database, DatabaseConnection};
+
+use app::config::Config;
+use app::state::AppState;
+
+use crate::routers::create_router;
+
+// TODO: middleware, logging, authentication
+pub fn setup_router(conn: DatabaseConnection) -> Router {
+    create_router(AppState { conn })
+}
+
+pub fn setup_config() -> Config {
+    dotenvy::dotenv().ok();
+    Config::from_env()
+}
+
+pub async fn setup_db(db_url: &str, prefork: bool) -> DatabaseConnection {
+    let mut opt = ConnectOptions::new(db_url);
+    opt.max_lifetime(Duration::from_secs(60));
+
+    if !prefork {
+        opt.min_connections(10).max_connections(100);
+    }
+
+    Database::connect(opt)
+        .await
+        .expect("Database connection failed")
+}