Is your feature request related to a problem or challenge?

While reviewing #6885 (review) to add support for @> and <@ array containment operators, I found that there is no documentation on the list of supported datafusion operators

Describe the solution you'd like

I would like documentation for the operators listed in https://github.com/apache/arrow-datafusion/blob/e02ed51b880d09f2156bd192d283aef75cab04b7/datafusion/expr/src/operator.rs#L29-L80

In a new page of the datafusion SQL guide https://arrow.apache.org/datafusion/user-guide/sql/index.html

Describe alternatives you've considered

No response

Additional context

This would be a great way to get introduced to datafusion, fire up the CLI to test it out, and help the community so marking it as a good first issue