Various fixes and improvements (#177)

- Remove custom `ESP_TARGET` and use `ESP_PLATFORM` everywhere
- Add `Loader` service functionality to `tt::app::` namespace
- Make `Loader` `PubSub` usable by exposing the messages
- Add board type to crash log
- Don't show SD card in Files app when it's not mounted
- Set default SPI frequency for SD cards
- Move TT_VERSION to scope that works for sim too
- Log Tactility version and board on boot
- Rename "Yellow Board" to "CYD 2432S024C"

Boards/CYD-2432S024C/Source/hal/YellowTouch.h

@@ -0,0 +1,17 @@
+#pragma once
+
+#include "hal/Touch.h"
+#include "TactilityCore.h"
+#include <esp_lcd_touch.h>
+
+class YellowTouch : public tt::hal::Touch {
+private:
+    esp_lcd_panel_io_handle_t ioHandle = nullptr;
+    esp_lcd_touch_handle_t touchHandle = nullptr;
+    lv_indev_t* _Nullable deviceHandle = nullptr;
+    void cleanup();
+public:
+    bool start(lv_display_t* display) override;
+    bool stop() override;
+    lv_indev_t* _Nullable getLvglIndev() override { return deviceHandle; }
+};