Implement "Share on Mastodon"-button in templates

[novoid]

https://github.com/Juerd/tootpick?tab=readme-ov-file provides a software as well as a service to share articles on Mastodon.

Rough plan:

• find a format how such a link should look like
  • idea: "<title>\n\n\n<hashtags for the blog (maybe additional config parameter? In Karl's case, this would be #publicvoit)>"
  • maybe: article tags as list of hashtags?
• extend text templates with an additional element (HTML/CSS)
• add a Python function to replace template text with link
• linkify the title, ...