Implement local web server on SoftAP for uploading PNG/MP3/WAV files directly to SD card

sound_picture_app/sound_picture_app.ino

@@ -2,6 +2,7 @@
 #include "SD_Card.h"
 #include "Display_PNG.h"
 #include "Audio_Player.h"
+#include "Web_Server.h"
 #include <algorithm>
 
 #define BOOT_KEY_PIN 9
@@ -79,6 +80,9 @@ void setup() {
     Display_Image_By_Index("/", 0);
     currentState = STATE_IDLE;
   }
+  
+  // Start the SoftAP and local Web Server
+  initWebServer();
 }
 
 void playCurrentPair() {
@@ -265,6 +269,9 @@ void loop() {
   
   lastButtonState = currentButtonReading;
   
+  // Handle incoming web server clients
+  handleWebServer();
+  
   // Update status RGB LED
   updateLEDStatus();