Replace TopBarRegistry with reactive solution

Co-authored-by: Mikko Aspiala <mikko.aspiala@gmail.com>
Signed-off-by: Janne Savolainen <janne.savolainen@live.fi>

src/renderer/components/layout/top-bar/top-bar-items/top-bar-items.injectable.ts

@@ -0,0 +1,37 @@
+/**
+ * Copyright (c) 2021 OpenLens Authors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+import { getInjectable, lifecycleEnum } from "@ogre-tools/injectable";
+import { computed } from "mobx";
+import rendererExtensionsInjectable from "../../../../../extensions/renderer-extensions.injectable";
+
+const topBarItemsInjectable = getInjectable({
+  instantiate: (di) => {
+    const extensions = di.inject(rendererExtensionsInjectable);
+
+    return computed(() =>
+      extensions.get().flatMap((extension) => extension.topBarItems),
+    );
+  },
+
+  lifecycle: lifecycleEnum.singleton,
+});
+
+export default topBarItemsInjectable;