Add visability to constructor

[Norbytus]

Description

Description

For now all constructor generate as public, and not possibility to declare as private or protected

Use Case

Some time need declare class __construct as private or protected, and instead construct use

public static function new()

or to escape from error You cannot instantiate this class from PHP.

Example

#[php_class]
struct TestClassMethodVisability;

#[php_impl]
impl TestClassMethodVisability {
    #[php(vis = "private")]
    fn __construct() -> Self {
        Self
    }

    #[php(vis = "private")]
    fn private() -> u32 {
        3
    }

    #[php(vis = "protected")]
    fn protected() -> u32 {
        3
    }
}
#[php_class]
struct TestClassProtectedConstruct;

#[php_impl]
impl TestClassProtectedConstruct {
    #[php(vis = "protected")]
    fn __construct() -> Self {
        Self
    }
}

#[php_class]
struct TestClassMethodVisability;

#[php_impl]
impl TestClassMethodVisability {
    #[php(vis = "private")]
    fn __construct() -> Self {
        Self
    }

    #[php(vis = "private")]
    fn private() -> u32 {
        3
    }

    #[php(vis = "protected")]
    fn protected() -> u32 {
        3
    }
}
#[php_class]
struct TestClassProtectedConstruct;

#[php_impl]
impl TestClassProtectedConstruct {
    #[php(vis = "protected")]
    fn __construct() -> Self {
        Self
    }
}

Additional Context

• I can try implementing this feature myself (please assign me to this issue)