service/apt: Add and implement more service commands. (#6721)

* service/apt: Add and implement more service commands.

* service/apt: Implement power button.

* Address review comments and fix GetApplicationRunningMode bug.

src/core/hle/service/apt/ns.cpp

@@ -29,4 +29,17 @@ std::shared_ptr<Kernel::Process> LaunchTitle(FS::MediaType media_type, u64 title
     return process;
 }
 
+void RebootToTitle(Core::System& system, FS::MediaType media_type, u64 title_id) {
+    auto new_path = AM::GetTitleContentPath(media_type, title_id);
+    if (new_path.empty() || !FileUtil::Exists(new_path)) {
+        // TODO: This can happen if the requested title is not installed. Need a way to find
+        // non-installed titles in the game list.
+        LOG_CRITICAL(Service_APT,
+                     "Failed to find title '{}' to jump to, resetting current title instead.",
+                     new_path);
+        new_path.clear();
+    }
+    system.RequestReset(new_path);
+}
+
 } // namespace Service::NS