add no-unused and react/recommended to eslint (#1523)

* add no-unused-vars and no-unused-imports

* added quotes: double, and remove ignore pattern

* move itif and describeif into utils

Signed-off-by: Sebastian Malton <sebastian@malton.name>

__mocks__/electron.ts

@@ -4,9 +4,7 @@ module.exports = {
   app: {
     getVersion: jest.fn().mockReturnValue("3.0.0"),
     getLocale: jest.fn().mockRejectedValue("en"),
-    getPath: jest.fn((name: string) => {
-      return "tmp";
-    }),
+    getPath: jest.fn(() => "tmp"),
   },
   remote: {
     app: {