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/fileselection/FileSelection.cpp

@@ -6,6 +6,7 @@
 #include <app/event.h>
 #include <app/io.h>
 #include <app/manager.h>
+#include <app/start.h>
 #include <app/manifest.h>
 #include <app/scheduler.h>
 #include <app/stream.h>
@@ -106,7 +107,7 @@ uint32_t startWithMode(const char* modeArg, uint32_t callerAppInstanceId, AppStr
         .event_group = eventGroup,
     };
     uint32_t instanceId = 0;
-    app_manager_start_for_result_with_streams(manifest.id, callerAppInstanceId, 1, argv, &binding, 1, &instanceId);
+    app_start_for_result_with_streams(manifest.id, 1, argv, &binding, 1, callerAppInstanceId, &instanceId);
     return instanceId;
 }