Add workflow execution process

internal/domain/workflow_output.go

@@ -0,0 +1,12 @@
+package domain
+
+const WorkflowOutputCertificate = "certificate"
+
+type WorkflowOutput struct {
+	Meta
+	Workflow string           `json:"workflow"`
+	NodeId   string           `json:"nodeId"`
+	Node     *WorkflowNode    `json:"node"`
+	Output   []WorkflowNodeIo `json:"output"`
+	Succeed  bool             `json:"succeed"`
+}