Support for building and running external apps (#112)

Tactility/Source/app/selectiondialog/SelectionDialog.cpp

@@ -109,3 +109,15 @@ extern const AppManifest manifest = {
 };
 
 }
+extern "C" {
+
+extern void tt_app_selectiondialog_start2(const char* title, int argc, const char* argv[]) {
+    std::vector<std::string> list;
+    for (int i = 0; i < argc; i++) {
+        const char* item = argv[i];
+        list.push_back(item);
+    }
+    tt::app::selectiondialog::start(title, list);
+}
+
+}