Easy way to allow scripts execution?

Hi there,
in my company we have a widget (provided by a WordPress plugin) that we use both with freescout and helpscout. Its html contains some scripts that we'd like to be executed on freescout. Due to the [freescout restrictions](https://github.com/freescout-help-desk/freescout/wiki/Development-Guide#javascript-and-content-security-policy-csp) that's not possible unless the correct nonce attribute is added to the script elements. So my idea was to replace this line:

https://github.com/fulldecent/freescout-sidebar-webhook/blob/739c02ff29d261a122114d63864d77a0d124f6d9/Public/js/module.js#L15

with this code:

```js
const cspString = $('meta[http-equiv="Content-Security-Policy"]').attr('content');
const nonce = cspString.match(/nonce-([^']+)/)[1];

$('#swh-content').html(response.html.replace(/{{nonce}}/g, `nonce="${nonce}"`));
```

with the webhook server responding with an html like:
```html
[...]

<?php echo file_get_contents($js_file); ?>

[...]
```

what do you think? do you have a better way to do that? And/Or, are you interested into implementing it in your module?

Thank you so much!