Enhanced Google Chat

This extention improves google chat by:

- Adding a copy link button on the menu, easily copy a topic's direct link
- Save messages for every chat
- Highlighting code: You can use this format to write code:

```js
myCode
```

After ``` you can write the language alias you want to enforce. You can find the full list of supported languages here: https://github.com/highlightjs /highlight.js/blob/main/SUPPOR TED_LANGUAGES.md#supported-lan guages