Create a new permissions sync option for categories.

It would be great if there was an option to synchronize role permissions in a channel according to category, **but NOT SYNCHRONIZING EVERYONE ROLE**. It would be much easier to configure other channels and not need to edit channels all the time.

For example, I create a main server channels category, in the category, permissions are enabled for only admins to send messages, but if I create a channel in this category called suggestions and I want everyone to also send messages there, the channel will no longer have the permissions synchronized with the main category.

And if eventually a mute role is added on the server and if I want to make a change, I would have to update these channels individually one by one.

![g68WoewEr9](https://user-images.githubusercontent.com/40671520/124203980-55008d00-dab4-11eb-9c6c-90fd086aa10c.gif)