Enable @typescript-eslint/explicit-member-accessibility on /src (#9785)

* Enable `@typescript-eslint/explicit-member-accessibility` on /src

* Prettier

src/settings/controllers/PushToMatrixClientController.ts

@@ -22,7 +22,7 @@ import SettingController from "./SettingController";
  * When the value changes, call a setter function on the matrix client with the new value
  */
 export default class PushToMatrixClientController extends SettingController {
-    constructor(private setter: Function, private inverse: boolean) {
+    public constructor(private setter: Function, private inverse: boolean) {
         super();
     }