feat(rlcd): Waveshare ESP32-S3-RLCD-4.2 support on latest main

- ST7305 driver with persistent 15KB DMA buffer (fix use-after-free +
  WDT lockup that caused freeze after flash)
- Reset timing fix: 150ms after reset, 50ms after init
- DTS: i2s0 mclk 16, bclk 9, ws 45, out 8, in 10 - fixes GPIO5 conflict
- i2c0 uses esp32-i2c-master, SDMMC 1-bit
- device.properties: colorDepth 16, fontSize 20, DefaultDark
- Amp GPIO46 init in initBoot
- Buttons: two-button control GPIO18 (cycle) + GPIO0 (select)

Base: origin/main f9453d89

Devices/waveshare-esp32-s3-rlcd/Source/devices/Display.cpp

@@ -0,0 +1,23 @@
+#include "Display.h"
+#include <St7305Display.h>
+
+std::shared_ptr<tt::hal::display::DisplayDevice> createDisplay() {
+    auto configuration = std::make_unique<St7305Display::Configuration>(
+        SPI2_HOST,
+        GPIO_NUM_40, // CS
+        GPIO_NUM_5,  // DC
+        400,         // Width
+        300,         // Height
+        nullptr,     // Touch device
+        false,       // swapXY
+        false,       // mirrorX
+        false,       // mirrorY
+        true,        // invertColor - initial true to match existing inverted look, user can toggle via Settings->Display
+        0            // bufferSize (0 = default, which is full screen = 120,000 pixels)
+    );
+
+    configuration->resetPin = GPIO_NUM_41;
+
+    auto display = std::make_shared<St7305Display>(std::move(configuration));
+    return std::reinterpret_pointer_cast<tt::hal::display::DisplayDevice>(display);
+}