Add Wi-Fi scan details display and MQTT publish

- HTML: Add Wi-Fi scan results container to network.html
- Rust: Implement `wifi_scan_details()` with RSSI, channel, auth method
- API & UI: Fetch and display scan results in table format
- MQTT: Publish top 10 networks sorted by RSSI to `/wifi_scan`

Software/MainBoard/rust/src_webpack/src/network.html

@@ -85,7 +85,15 @@
                 <input class="mqttvalue" type="text" id="mqtt_password" placeholder="">
             </div>
         </div>
+        <div class="subcontainer">
+            <div class="flexcontainer">
+                <div class="subtitle">Wi-Fi Scan Results</div>
+            </div>
+            
+            <div id="wifi-results">
+                <p>Scan for available networks to see signal strength</p>
+            </div>
+        </div>
     </div>
-    
 
 </div>