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/Lvgl.cpp

@@ -0,0 +1,26 @@
+#include "esp_lvgl_port.h"
+#include "Log.h"
+#include "lvgl/LvglSync.h"
+#include "Thread.h"
+
+#define TAG "twodotfour_lvgl"
+
+bool twodotfour_lvgl_init() {
+    const lvgl_port_cfg_t lvgl_cfg = {
+        .task_priority = static_cast<UBaseType_t>(tt::THREAD_PRIORITY_RENDER),
+        .task_stack = 8096,
+        .task_affinity = -1, // core pinning
+        .task_max_sleep_ms = 500,
+        .timer_period_ms = 5
+    };
+
+    if (lvgl_port_init(&lvgl_cfg) != ESP_OK) {
+        TT_LOG_E(TAG, "lvgl port init failed");
+        return false;
+    }
+
+    // Set syncing functions
+    tt::lvgl::syncSet(&lvgl_port_lock, &lvgl_port_unlock);
+
+    return true;
+}