Add manual translate as default (#33)

* Added translate and switch auto buttons

* Tests updated

* Added hotkey & improved buttons visually

components/index.tsx

@@ -6,3 +6,4 @@ export { default as Footer } from "./Footer";
 export { default as ColorModeToggler } from "./ColorModeToggler";
 export { default as LangSelect } from "./LangSelect";
 export { default as TranslationArea } from "./TranslationArea";
+export { default as AutoTranslateButton } from "./AutoTranslateButton";