addon.xml

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<addon id="context.trakt.addtowatchlist" name="Trakt - Add to watchlist button" version="1.1.0" provider-name="Razzeee">
  <requires>
    <import addon="xbmc.python" version="3.0.0"/>
    <import addon="script.trakt" version="3.0.2"/>
  </requires>
  <extension point="kodi.context.item">
    <menu id="kodi.core.main">
      <item library="addon.py">
        <label>32000</label>
        <visible>String.IsEqual(ListItem.dbtype,movie) | String.IsEqual(ListItem.dbtype,tvshow) | String.IsEqual(ListItem.dbtype,season) | String.IsEqual(ListItem.dbtype,episode)</visible>
      </item>
    </menu>
  </extension>
  <extension point="xbmc.addon.metadata">
    <summary lang="en_GB">Add Trakt add to watchlist button to context menu in video library</summary>
    <description lang="en_GB">Add Trakt add to watchlist button to the context menu in your library.</description>
    <platform>all</platform>
    <source>https://github.com/Razzeee/context.trakt.addtowatchlist</source>
    <license>GPL-2.0-or-later</license>
    <assets>
      <icon>icon.png</icon>
    </assets>
  </extension>
</addon>