Align board project names with board ids (#399)

To avoid keeping track of a list that maps board project names to board ids.
Because of this change, we don't have to manually edit `boards.cmake` anymore when adding a new board.

Boards/lilygo-tdongle-s3/Source/devices/Display.cpp

@@ -0,0 +1,36 @@
+#include "Display.h"
+
+#include <PwmBacklight.h>
+#include <St7735Display.h>
+
+#define LCD_SPI_HOST SPI3_HOST
+#define LCD_PIN_CS GPIO_NUM_4
+#define LCD_PIN_DC GPIO_NUM_2
+#define LCD_PIN_RESET GPIO_NUM_1
+#define LCD_HORIZONTAL_RESOLUTION 80
+#define LCD_VERTICAL_RESOLUTION 160
+#define LCD_SPI_TRANSFER_HEIGHT LCD_VERTICAL_RESOLUTION / 4
+
+std::shared_ptr<tt::hal::display::DisplayDevice> createDisplay() {
+    auto configuration = std::make_unique<St7735Display::Configuration>(
+        LCD_SPI_HOST,
+        LCD_PIN_CS,
+        LCD_PIN_DC,
+        LCD_PIN_RESET,
+        80,
+        160,
+        nullptr,
+        false,
+        false,
+        false,
+        true,
+        0,
+        26,
+        1
+    );
+
+    configuration->backlightDutyFunction = driver::pwmbacklight::setBacklightDuty;
+
+    auto display = std::make_shared<St7735Display>(std::move(configuration));
+    return std::reinterpret_pointer_cast<tt::hal::display::DisplayDevice>(display);
+}