chore: Add Tutorial and example for the WP GraphQL Logging Plugin

[colinmurphy]

Overview

Add the following

1. docs/plugins/wpgraphql-logging/explanation docs for events, handlers & rules
2. Add a tutorial for WPGraphQL Logging with docs and an example with wp-env

[colinmurphy]

@ahuseyn

Going to do this as part of the docs works.