feat: Added price updating

app/templates/drink_manage.html

@@ -11,7 +11,7 @@
 
     <div class="card">
         <h2>{{ drink.name }}</h2>
-        <p>Price: {{ drink.price }}€</p>
+        <p>Price: {{ "%.2f"|format(drink.price) }}€</p>
         <p>Stock: {{ drink.stock }}</p>
     </div>
 
@@ -26,6 +26,17 @@
         </form>
     </div>
 
+    <div class="card">
+        <h3>Adjust price</h3>
+        <form method="POST" action="/drink/{{ drink.id }}/price">
+            <label>
+                New price:
+                <input type="number" step="0.01" name="price" required>
+            </label>
+            <button class="button" type="submit">Change price</button>
+        </form>
+    </div>
+
     <div class="card">
         <h3>Danger zone</h3>
         <form method="POST" action="/drink/{{ drink.id }}/delete" onsubmit="return confirm('Delete this drink?');">