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/unphone/Source/devices/Touch.cpp

@@ -0,0 +1,14 @@
+#include "Touch.h"
+
+#include <Tactility/Log.h>
+
+std::shared_ptr<Xpt2046Touch> createTouch() {
+    auto configuration = std::make_unique<Xpt2046Touch::Configuration>(
+        SPI2_HOST,
+        GPIO_NUM_38,
+        320,
+        480
+    );
+
+    return std::make_shared<Xpt2046Touch>(std::move(configuration));
+}