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.
This adds support to do on-upgrade migrations of the previous iutf8 type to iname, iname contains a better checker of the content of the name values that will become spn's, this allows auth via spn as well as just name. This really just does a lot of clean up to make spns more viable. #181 is still outstanding, but you can currently already login via spn a posixid_to_uuid supports this, it's only the resolving of unixgroup/accounts that need to have name as Option to cause a fall back to spn when in a trust.
Implements #122 password import. This adds most of the server core framework to allow password imports from other sources, with new types easily able to be added in credential.rs.
