code template for esp32 added, mb need to change ino for rs

esp32/esp32_quiz/esp32_quiz.ino

@@ -0,0 +1,39 @@
+#include <WiFi.h>
+#include <LiquidCrystal.h>
+
+// LCD pins: RS, EN, D4, D5, D6, D7
+LiquidCrystal lcd(18, 19, 13, 14, 15, 26);
+
+const int LED_PIN = 2;  // built-in LED on most ESP32 devkits
+
+void setup() {
+  Serial.begin(115200);
+
+  // WiFi chip init (not connected yet)
+  WiFi.mode(WIFI_STA);
+  WiFi.disconnect();
+  Serial.println("WiFi initialized");
+
+  // Let LCD power up before init (ESP32 boots faster than LCD expects)
+  delay(500);
+  lcd.begin(16, 2);
+  lcd.clear();
+
+  pinMode(LED_PIN, OUTPUT);
+}
+
+void loop() {
+  Serial.println("led on!");
+  digitalWrite(LED_PIN, HIGH);
+  delay(1000);
+
+  lcd.clear();
+  lcd.print("Test message!");
+
+  Serial.println("led off!");
+  digitalWrite(LED_PIN, LOW);
+  delay(1000);
+
+  lcd.clear();
+  lcd.print("Test message2!");
+}