Add new First Aid option: Fix Homebrew Permissions

[nicoverbruggen]

Where should this be located?

First Aid & Services > First Aid > Fix Homebrew Permissions

Why do this?

See #85.

What should happen?

• Turn off all services first
• Open terminal with pre-filled command to take ownership of folders
• Profit! User can now run brew update && brew upgrade / brew cleanup without worries about permissions

[nicoverbruggen]

The folders that need to be owned for each PHP formula (by user/wheel):

let directories = [
    "\(brewDir)/Cellar/\(formula)"
    "\(brewDir)/opt/\(formula)"
    "\(brewDir)/var/homebrew/linked/\(formula)"
];