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/app/src/config.rs

@@ -0,0 +1,24 @@
+pub struct Config {
+    pub db_url: String,
+    pub host: String,
+    pub port: u32,
+    pub prefork: bool,
+}
+
+impl Config {
+    pub fn from_env() -> Config {
+        Config {
+            db_url: std::env::var("DATABASE_URL").expect("DATABASE_URL is not set in .env file"),
+            host: std::env::var("HOST").expect("HOST is not set in .env file"),
+            port: std::env::var("PORT")
+                .expect("PORT is not set in .env file")
+                .parse()
+                .expect("PORT is not a number"),
+            prefork: std::env::var("PREFORK").is_ok_and(|v| v == "1"),
+        }
+    }
+
+    pub fn get_server_url(&self) -> String {
+        format!("{}:{}", self.host, self.port)
+    }
+}