Render public record methods

[badcel]

Render struct methods / functions / constructors / typefunction in public Api. Probably depends on #622

If records are rendered as a class, verify if constructors should be regular constructors and all the classes be sealed as there is no inheritance for records. Alternatively make constructors static functions.

• Verify WebKit2.UserScript.New it has a manually written constructor.

[badcel]

• Constructors get rendered as static methods as there are record types which are not sealed currently (foreign records).
• WebKit2.UserScript.New is rendered.