Add textbox to copy html version

[guilyx]

Hey,

Additionally to the markdown, adding a textbox to copy an HTML centered version could be nice

<p align="center">
  <a href="https://spotify-github-profile.vercel.app/api/view?uid=11147618695&redirect=true">
    <img src="https://spotify-github-profile.vercel.app/api/view?uid=11147618695&cover_image=true&theme=default&bar_color=e3e3e3&bar_color_cover=true">
  </a>
</p>

[kittinan]

@guilyx thank you for your suggestion.