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"

App/Kconfig

@@ -1,13 +1,18 @@
 # Kconfig file for Tactility example app
 menu "Tactility App"
+    config TT_BOARD_NAME
+        string "Board Name"
+        default ""
+    config TT_BOARD_ID
+        string "Board ID"
+        default ""
     choice
         prompt "Board"
         default TT_BOARD_CUSTOM
-
         config TT_BOARD_CUSTOM
             bool "Custom"
-        config TT_BOARD_YELLOW_BOARD_24_CAP
-            bool "Yellow Board (2.4\" capacitive)"
+        config TT_BOARD_CYD_2432S024C
+            bool "CYD 2432S024C"
         config TT_BOARD_LILYGO_TDECK
             bool "LilyGo T-Deck"
         config TT_BOARD_M5STACK_CORE2