Run executables directly (#645)

- Apps can be launched directly from file paths (including Files app support)
- Added executable detection to identify unsupported or invalid binaries before launch.
- App startup is now streamlined through separate registered-app and direct-execution interfaces.
- Existing app launch points were migrated to the updated startup APIs.

Tactility/Source/app/timedatesettings/TimeDateSettings.cpp

@@ -5,6 +5,7 @@
 
 #include <app/event.h>
 #include <app/manager.h>
+#include <app/start.h>
 #include <app/manifest.h>
 #include <app/scheduler.h>
 
@@ -206,7 +207,7 @@ int32_t appMain(int argc, char* argv[]) {
 
 uint32_t start() {
     uint32_t instanceId = 0;
-    app_manager_start(manifest.id, &instanceId);
+    app_start(manifest.id, 0, nullptr, &instanceId);
     return instanceId;
 }