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/Init.cpp

@@ -0,0 +1,15 @@
+#include "PwmBacklight.h"
+#include "Tactility/service/gps/GpsService.h"
+
+#include <Tactility/TactilityCore.h>
+
+#define TAG "T-Dongle"
+
+bool initBoot() {
+    if (!driver::pwmbacklight::init(GPIO_NUM_38, 12000)) {
+        TT_LOG_E(TAG, "Backlight init failed");
+        return false;
+    }
+
+    return true;
+}