Graphql enum description

[drmax24]

How can i specify the description (for schema) for my enum?

[oojacoboo]

@drmax24 The description implementation in GraphQLite leaves a bit to be desired. I don't believe types currently support descriptions - maybe through the docblock.

GraphQLite originally relied on docblocks to set the description (for some SDEs), and still does for some schema definition elements (operations).

A comprehensive approach needs to be taken to descriptions. All attributes that define a schema definition element should include a description argument. The SchemaFactory should include a setting on whether to default to phpdoc for descriptions (if an attribute doesn't define one and the phpdoc does). Defaulting to phpdoc is a potential security issue with unintended consequences. And, IMO, should be disabled by default. It was a bad design choice.

See #453

A PR on this is very welcomed