Document Chef Infra Client event handler event type parameters

Description

The docs here refer to the event types available during a Chef Infra Client run :: https://docs.chef.io/handlers.html#event-types ..

It's great that those are documented, but each event type has their own set of parameters, and they are not consistent across each type ..

Documenting all of the event type parameters might be a pain, but maybe we can at least link to the code so anyone who is exploring these event types and trying to figure out which parameters are available to them can have some sort of reference to go by .. Otherwise, users will need use some sort of debugging tool to try and determine what variables are available to them ..

Here is the link to possible event types, which also define the parameters for each one :: https://github.com/chef/chef/blob/master/lib/chef/event_dispatch/base.rb ..

Just an idea and thanks for your work !!

Chef Version

Chef Infra Client

Start with the event types section at docs.chef.io/handlers.html#event-types and inspect lib/chef/event_dispatch/base.rb, which defines the possible event types and their parameters. Done means either documenting those parameters or adding a useful link from the event types documentation to the source reference.