[REPO] Add plugin inventree-brother-plugin (#113)

* Add cups plugin

* REPO] Add plugin inventree-brother-plugin

* fix format

* update listing

* update ref

* fix olivers short name

* fix reference

* clean up description

* make website optional

* fix tags

_layouts/plugin.html

@@ -27,12 +27,14 @@ fullwith: true
           {% if page.pypi and page.package_name %}Package on PyPI:<pre class="my-0">{{ page.package_name }}</pre>{% endif %}
         </p>
 
+        {% if page.website %}
         <a href="{{ page.website }}" class="no-underline" aria-label="open website">
           <div>
             <h4 class="plugin_links">Website <i class="fa-solid fa-arrow-up-right-from-square" title="External link"></i></h4>
             <p class="font-normal">{{ page.website }}</p>
           </div>
         </a>
+        {% endif %}
 
         {% if page.issue_tracker %}
         <a href="{{ page.issue_tracker }}" class="no-underline" aria-label="open the issue tracker">