Refactor app loading and window management (#609)

Modules/app-esp32-module/source/module.cpp

@@ -0,0 +1,30 @@
+// SPDX-License-Identifier: Apache-2.0
+#include <app_esp32/module.h>
+
+#include <service/manager.h>
+
+#include <tactility/error.h>
+#include <tactility/module.h>
+
+extern "C" {
+
+extern ServiceManifest loader_service_manifest;
+
+static error_t start() {
+    return service_manager_add(&loader_service_manifest, /*auto_start=*/true);
+}
+
+static error_t stop() {
+    return service_manager_remove(loader_service_manifest.id);
+}
+
+Module app_esp32_module = {
+    .name = "app-esp32",
+    .start = start,
+    .stop = stop,
+    .drivers = nullptr,
+    .symbols = nullptr,
+    .internal = nullptr
+};
+
+}