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/Tactility.cpp

@@ -26,6 +26,7 @@
 
 #include <app/event.h>
 #include <app/manager.h>
+#include <app/start.h>
 #include <app/manifest.h>
 #include <app/module.h>
 
@@ -571,7 +572,7 @@ void run(Module* const dtsModules[], const DtsDevice dtsDevices[]) {
     // It's a new-model (app-module + window-manager) app now, replacing the old app::start().
     app_manager_add(&app::boot::manifest);
     uint32_t boot_instance_id = 0;
-    app_manager_start(app::boot::manifest.id, &boot_instance_id);
+    app_start(app::boot::manifest.id, 0, nullptr, &boot_instance_id);
 
     LOG_I(TAG, "Main dispatcher ready");
     while (true) {