v2.3.0 - implement nodeinfo standard

nodeinfo

nodeinfo is a popular method for discovering information about servers in the fediverse, and now it is supported by Apex. New settings have been added (listed in README) to configure your node's nodeinfo. A new index is added to the database to ensure the user count queries are fast, but this does not require a migration unless you've added an index to objects collection that already covers id and type. Please file an issue if you encounter any difficult upgrading.

What's Changed

• implement nodeinfo standard by @wmurphyrd in #53

Full Changelog: v2.2.1...v2.3.0