Propmt when a api key can not be use + house keeping (#173)

* chore: remove old files

* chore: change JS tests to TS, delete dummy tests

* chore: bump manifests version

tests/utils/changeExtensionState.spec.ts

@@ -0,0 +1,20 @@
+import chai from 'chai';
+import changeExtensionState from '../../src/utils/changeExtensionState';
+
+const expect = chai.expect;
+
+jest.mock('webextension-polyfill', () => {
+  return {
+    runtime: {
+      getManifest: () => {
+        return { version: 'test-version' };
+      },
+    },
+  };
+});
+
+describe('changeExtensionState', function () {
+  it('should be a function', function () {
+    expect(changeExtensionState).to.be.a('function');
+  });
+});