feat: init-express-backend (#6)

Reviewed-on: #6
Co-authored-by: Clement <c.boesmier@aptatio.com>
Co-committed-by: Clement <c.boesmier@aptatio.com>

Express/barAndCafe/src/app.ts

@@ -0,0 +1,32 @@
+import express from "express"
+/**
+ * Initialize Express application instance.
+ * @returns An initialized Express application object.
+ */
+const app = express()
+
+
+
+/**
+ * Handle GET request for homepage route ('/welcome').
+ * Send back a simple json response.
+ * @param {express.Request} req - HTTP Request object.
+ * @param {express.Response} res - HTTP Response object.
+ */
+function getWelcome(req: express.Request, res: express.Response) {
+    const out = {hello:"world"}
+    res.send(out)
+}
+
+/**
+ * @openapi
+ * /welcome:
+ *   get:
+ *     description: Welcome to swagger-jsdoc!
+ *     responses:
+ *       200:
+ *         description: Returns a welcome json.
+ */
+app.get("/welcome", getWelcome)
+
+export default app