Implemented LaunchId and FileSelection, updated Notes (#281)

- Implemented `LaunchId` to keep track of the apps that are started
- Implemented `FileSelection` app to select existing and/or new files.
- Moved some re-usable file functionality to `tt::file::`
- Renamed `Files` app to `FileBrowser`
- Updated `Notes` app to use new `FileSelection` functionality, and cleaned it up a bit.
- General code cleanliness improvements

Tactility/Source/lvgl/LabelUtils.cpp

@@ -1,14 +1,18 @@
 #include <Tactility/lvgl/LabelUtils.h>
 #include <Tactility/file/File.h>
+#include <Tactility/hal/sdcard/SdCardDevice.h>
 
 namespace tt::lvgl {
 
 #define TAG "tt_lv_label"
 
 bool label_set_text_file(lv_obj_t* label, const char* filepath) {
-    auto text = file::readString(filepath);
+    auto text = hal::sdcard::withSdCardLock<std::unique_ptr<uint8_t[]>>(std::string(filepath), [filepath]() {
+        return file::readString(filepath);
+    });
+
     if (text != nullptr) {
-        lv_label_set_text(label, (const char*)text.get());
+        lv_label_set_text(label, reinterpret_cast<const char*>(text.get()));
         return true;
     } else {
         return false;