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/models/src/schemas/user.rs

@@ -0,0 +1,32 @@
+use serde::Serialize;
+use utoipa::ToSchema;
+
+use crate::domains::user;
+
+#[derive(Serialize, ToSchema)]
+pub struct UserSchema {
+    pub id: u32,
+    pub username: String,
+}
+
+impl From<user::Model> for UserSchema {
+    fn from(user: user::Model) -> Self {
+        Self {
+            id: user.id as u32,
+            username: user.username,
+        }
+    }
+}
+
+#[derive(Serialize, ToSchema)]
+pub struct UserListSchema {
+    pub users: Vec<UserSchema>,
+}
+
+impl From<Vec<user::Model>> for UserListSchema {
+    fn from(users: Vec<user::Model>) -> Self {
+        Self {
+            users: users.into_iter().map(UserSchema::from).collect(),
+        }
+    }
+}