out parameter for Guard.IsAssignableToType<T>

### Overview

Add a ``Guard.IsAssignableToType`` with an out parameter of ``out T cast``

### API breakdown

```cs
///
/// Asserts that the input value can be assigned to a specified type.
///
/// The type to check the input value against.
/// The input to test.
/// The input as a .
/// The name of the input parameter being tested.
/// Thrown if can't be assigned to type .
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static void IsAssignableToType(object value, out T? cast, [CallerArgumentExpression("value")] string name = "")
{
if (value is T)
{
cast = (T)value;
return;
}

ThrowHelper.ThrowArgumentExceptionForIsAssignableToType(value, name);
}
```

### Usage example

```cs
public void Foo(IBase arg)
{
Guard.IsAssignableToType(arg, out Child child);

...
}
```

### Breaking change?

No

### Alternatives

```cs
public void Foo(IBase arg)
{
Guard.IsAssignableToType(arg);
var child = (Child)arg;

...
}
```

### Additional context

_No response_

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