add social sharing button for mastodon via add to any

Signed-off-by: thiswillbeyourgithub <26625900+thiswillbeyourgithub@users.noreply.github.com>

Author: thiswillbeyourgithub

_includes/social-share.html

@@ -7,6 +7,10 @@ <h4 class="page__share-title">{{ site.data.ui-text[site.locale].share_on_label |
 
   <a href="https://bsky.app/intent/compose?text={{ base_path }}{{ page.url }}" class="btn btn--bluesky" title="{{ site.data.ui-text[site.locale].share_on_label | default: 'Share on' }} Bluesky"><i class="fab fa-bluesky" aria-hidden="true"></i><span> Bluesky</span></a>
 
+<a href="https://www.addtoany.com/add_to/mastodon?linkurl={{ base_path | append: page.url | url_encode }}">
+    <img src="./images/mastodon_share.png" alt="Share on Mastodon" height="34" width="34">
+</a>
+
   <!-- <a href="https://www.facebook.com/sharer/sharer.php?u={{ base_path }}{{ page.url }}" class="btn btn--facebook" title="{{ site.data.ui-text[site.locale].share_on_label | default: 'Share on' }} Facebook"><i class="fab fa-facebook" aria-hidden="true"></i><span> Facebook</span></a> -->
   <!---->
   <!-- <a href="https://www.linkedin.com/shareArticle?mini=true&url={{ base_path }}{{ page.url }}" class="btn btn--linkedin" title="{{ site.data.ui-text[site.locale].share_on_label | default: 'Share on' }} LinkedIn"><i class="fab fa-linkedin" aria-hidden="true"></i><span> LinkedIn</span></a> -->