Fixes#195 pre release cleanup. This does a LOT, clippy, formatting, and much much more. It fixes a lot of parts of the book, improves server config and more.
Add's improvements to ldap compatibility. This stabilises DN formats and how they are returned, and adds the name2uuid index to help speed up binds and entry resolves on large queries. Even on the largest queries, this is able to process them rapidly, and the ldap interface now has single operation times of sub 0.001 second even on 100k entry databases with references.
adds an LDAP gateway to the server. It supports TLS if configured for the webserver, using the same parameters. It is a read only interface, only supporting bind via the configured posix password.
Implements #129, pam and nsswitch daemon capability. This is stage 1, which adds a localhost unix domain socket resolver, a ssh key client, support to the server for generating unix tokens, an async client lib, and client handles for adding posix extensions to accounts and groups.
