App and Service improvements (#106)

TactilityHeadless/Source/service/ServiceManifest.h

@@ -0,0 +1,30 @@
+#pragma once
+
+#include <string>
+
+namespace tt::service {
+
+class ServiceContext;
+
+typedef void (*ServiceOnStart)(ServiceContext& service);
+typedef void (*ServiceOnStop)(ServiceContext& service);
+
+struct ServiceManifest {
+    /**
+     * The identifier by which the app is launched by the system and other apps.
+     */
+    std::string id {};
+
+    /**
+     * Non-blocking method to call when service is started.
+     */
+    const ServiceOnStart onStart = nullptr;
+
+    /**
+     * Non-blocking method to call when service is stopped.
+     */
+    const ServiceOnStop onStop = nullptr;
+
+};
+
+} // namespace