Add Amazon as available option for social

I confirm:

[X] I have read the Hugo Clarity theme documentation.
[X] I have reviewed other issues in this repository, and this feature has not already been requested.

Type of feature (check all that apply)

[ ] Site functionality
[ ] Design (styling)
[ ] Site performance
[ ] Accessibility
[ ] Translations and internationalization (i18n)
[ ] Code improvements
[X] Other (please describe below)

Describe the feature

I'd love to be able to have an icon/section available for Amazon so that I can either use it to link to my Amazon wishlist or my author's main page, please.

Preferred solution

No response

Alternatives

No response

Additional Context

I was thinking of something like you've done for icons.html:

<symbol xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" id="calendar">
    <path d="M452 40h-24V0h-40v40H124V0H84v40H60C26.916 40 0 66.916 0 100v352c0 33.084 26.916 60 60 60h392c33.084 0 60-26.916 60-60V100c0-33.084-26.916-60-60-60zm20 412c0 11.028-8.972 20-20 20H60c-11.028 0-20-8.972-20-20V188h432v264zm0-304H40v-48c0-11.028 8.972-20 20-20h24v40h40V80h264v40h40V80h24c11.028 0 20 8.972 20 20v48z"></path>
    <path d="M76 230h40v40H76zm80 0h40v40h-40zm80 0h40v40h-40zm80 0h40v40h-40zm80 0h40v40h-40zM76 310h40v40H76zm80 0h40v40h-40zm80 0h40v40h-40zm80 0h40v40h-40zM76 390h40v40H76zm80 0h40v40h-40zm80 0h40v40h-40zm80 0h40v40h-40zm80-80h40v40h-40z"></path>
  </symbol>

chipzoller / hugo-clarity