Add description to instance

[6543]

move wily used nodeDescription into the normal spec.
this also should contain more instance configured specific information.

[6543]

about limit length

the-federation.info database has this:

select node.domain,LENGTH(d::text) as l from (select node_id,data->'metadata'->'nodeDescription'::text as d from node_info where data->'metadata'->'nodeDescription' IS NOT NULL) JOIN node on node.id=node_id order by l desc limit 30;

           domain           |  l   
----------------------------+------
 el-spot.xyz                | 2443
 banana.dog                 | 2069
 peertube.uno               | 1722
 hereisliberty.com          | 1040
 twely.etn.icu              | 1035
 lessthanthree.cc           | 1020
 novoa.nagoya               | 1020
 misskey.takehi.to          | 1017
 sloth.run                  | 1013
 tube3.apolut.net           | 1003
 soratomo.info              |  980
 ein.shg-blog.de            |  976
 madost.one                 |  972
 misskey.kindworld.one      |  964
 matrix.rocks               |  964
 k.lapy.link                |  949
 gp.lapy.link               |  949
 nekomiya.net               |  947
 mewblog.thepolarbear.co.uk |  946
 genau.qwertqwefsday.eu     |  942
 firefish.crazy-to-bike.de  |  939
 lovers.alice.rest          |  936
 animalesenfu.ga            |  865
 misskey.dev                |  862
 beta.kokonect.link         |  844
 live.people-world-life.de  |  827
 sns.marosuke2600.work      |  824
 sudo.mkdir.uk              |  820
 social.bloodshed.party     |  814
 netzkae.se                 |  795

[6543]

@jhass okay, let's not make the optional format suggestion a blocker for this. I'll open a new pull request to keep track of this and discuss it once this got merged.

[jhass]

Thank you, I didn't mean to block this, I was just busy elsewhere for the past couple days 😇