C# Plugin: Add configuration for JSON attributes

[seclerp]

Is your feature request related to a problem? Please describe.

C# plugin has hardcoded behavior when dealing with JSON attributes. It always uses Newtonsoft.Json. This flow is unacceptable for such scenarios:

1. Use plugin without generating JSON attributes.
2. Use JSON attributes of another library (like standardized System.Text.Json).

I would like to use this plugin and library in general to generate POCO classes for my GraphQL schema in the Schema-first HotChocolate project, but I am not using Newtonsoft.Json and don't want to embed it in my project for fixing such a case.

Describe the solution you'd like
Add 2 additional options for configuration:

• emitJsonAttributes: boolean (default: true, to keep compatibility)
• jsonAttributesSource: 'Newtonsoft.Json' | 'System.Text.Json' | ... (default: 'Newtonsoft.Json' to keep compatibility)

The second option will be ignored when the first one is undefined or false.

I already have a solution in my fork, will create PR for that.

[dotansimha]

Available in

@graphql-codegen/c-sharp@4.0.0
@graphql-codegen/c-sharp-operations@2.0.0