Fraud SDK Go module v2.0.0

Breaking changes

• Refactor the SDK as a client generated from the Account Protect OpenAPI specification, replacing the previous hand-written implementation
• Update the module path from github.com/datadome/fraud-sdk-go to github.com/datadome/fraud-sdk-go/v2
• Update event submission to one dedicated struct per operation (e.g. ValidateLogin, CollectCustom, Feedback) instead of the Event interface and the Client.Validate/Client.Collect methods
• Update payload construction to functional options passed to per-operation constructors (e.g. NewValidateLogin(account, status, opts...)) instead of the previous per-event builders
• Update payload validation to run at construction time and fail on missing required fields instead of being silently accepted
• Update request execution to a PerformOperation(ctx, client, request, requestMetadata) method on each operation, now requiring an explicit context.Context, replacing Validate, ValidateWithRequestMetadata, Collect, and CollectWithRequestMetadata
• Update error handling so collect and feedback calls return a Go error (including the new HTTPError type and decoded API errors) instead of an ErrorResponsePayload with a Status field, while validate calls still fail open and return an allow action
• Rename ResponsePayload, SuccessResponsePayload, and ErrorResponsePayload to Response, ResponseLogin, and Error, remove the Status field, and uppercase the ResponseAction constants (Allow -> ALLOW, Deny -> DENY, Review -> REVIEW, Challenge -> CHALLENGE)
• Rename LoginStatus to LoginPayloadStatus and its Failed/Succeeded constants to LoginPayloadStatusFailed/LoginPayloadStatusSucceeded

Other changes

• Add support for the feedback endpoint with NewFeedback