Support for new properties

[brunobritodev]

First of all congrats on the great component and the hard work!

There is a new attribute fetchpriority="high" that has been recently introduced but is not yet supported by SeoTags. More on developer.mozilla.org

I’d like to suggest adding a Dictionary<string, string> property to the Preload class. This would allow the inclusion of arbitrary custom attributes in tags, making the component more flexible and future-proof as web standards evolve.

While having specific properties for new attributes is ideal, it can create an overhead for you to constantly update the component to keep up with every new standard. Adding a generic dictionary alongside existing specific properties would help keep SeoTags adaptable without compromising ease of maintenance.

Proposed usage example:

seoInfo.AddPreload(new Preload("https://site.com/image.jpg")
{
    Attributes = new Dictionary<string, string>
    {
        { "fetchpriority", "high" }
    }
});

What do you think? It makes sense? I’m happy to help with the implementation if needed.

[mjebrahimi]

Hey @brunobritodev
First of all, sorry for the late reply, I missed your message and just saw it now.

Thanks a lot for the kind words and your thoughtful suggestion!
You're right — adding a Dictionary<string, string> to the Preload class makes a lot of sense and would improve flexibility going forward as new attributes get introduced.

I like the idea, and I’d be happy to implement it, or feel free to open a PR if you’re still up for contributing.

Thanks again for taking the time to suggest it!