Add beets-filetote to community plugins docs (#5779)

Add link to community plugin
[`beets-filetote`](https://github.com/gtronset/beets-filetote).

This plugin is the spiritual successor to
[beets-copyartifacts](https://github.com/adammillerio/beets-copyartifacts)
(`beets-copyartifacts3` was last updated 3 years ago) and
[beets-extrafiles](https://github.com/Holzhaus/beets-extrafiles) (last
updated 5 years ago).

Given the updates and changes in beets and how outdated those plugins
are, does it make sense to keep `beets-copyartifacts` in the community
plugins list?

---------

Co-authored-by: Sebastian Mohr <39738318+semohr@users.noreply.github.com>

Author: gtronset

docs/plugins/index.rst

@@ -465,6 +465,10 @@ Here are a few of the plugins written by the beets community:
 `dsedivec`_
    Has two plugins: ``edit`` and ``moveall``.
 
+`beets-filetote`_
+   Helps bring non-music extra files, attachments, and artifacts during
+   imports and CLI file manipulation actions (`beet move`, etc.).
+
 `beets-follow`_
    Lets you check for new albums from artists you like.
 
@@ -560,6 +564,7 @@ Here are a few of the plugins written by the beets community:
 .. _cmus: http://cmus.sourceforge.net/
 .. _beet-amazon: https://github.com/jmwatte/beet-amazon
 .. _beets-alternatives: https://github.com/geigerzaehler/beets-alternatives
+.. _beets-filetote: https://github.com/gtronset/beets-filetote
 .. _beets-follow: https://github.com/nolsto/beets-follow
 .. _beets-ibroadcast: https://github.com/ctrueden/beets-ibroadcast
 .. _iBroadcast: https://ibroadcast.com/