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"

TactilityHeadless/Source/PartitionsEsp.cpp

@@ -1,4 +1,4 @@
-#ifdef ESP_TARGET
+#ifdef ESP_PLATFORM
 
 #include "EspPartitions_i.h"
 #include "Log.h"
@@ -51,4 +51,4 @@ esp_err_t initPartitionsEsp() {
 
 } // namespace
 
-#endif // ESP_TARGET
+#endif // ESP_PLATFORM