Proper enum cases casing

[krzysztofrewak]

I would like to enforce PER coding style for enum cases: https://www.php-fig.org/per/coding-style/#9-enumerations

Before:

enum Status: string
{
    case ACTIVE = "active";
    case INACTIVE = "inactive";
    case SUSPENDED = "suspended";
}

Expected:

enum Status: string
{
    case Active = "active";
    case Inactive = "inactive";
    case Suspended = "suspended";
}

Tricky part: what about acronyms?