Mark keys as a clean archtecture

src/content/controllers/AddonEnabledController.ts

@@ -0,0 +1,19 @@
+import * as messages from '../../shared/messages';
+import AddonEnabledUseCase from '../usecases/AddonEnabledUseCase';
+
+export default class AddonEnabledController {
+  private addonEnabledUseCase: AddonEnabledUseCase;
+
+  constructor({
+    addonEnabledUseCase = new AddonEnabledUseCase(),
+  } = {}) {
+    this.addonEnabledUseCase = addonEnabledUseCase;
+  }
+
+  getAddonEnabled(
+    _message: messages.AddonEnabledQueryMessage,
+  ): Promise<boolean> {
+    let enabled = this.addonEnabledUseCase.getEnabled();
+    return Promise.resolve(enabled);
+  }
+}