Add API for Variables (#29520)

close #27801

---------

Co-authored-by: silverwind <me@silverwind.io>

routers/api/v1/swagger/action.go

@@ -18,3 +18,17 @@ type swaggerResponseSecret struct {
 	// in:body
 	Body api.Secret `json:"body"`
 }
+
+// ActionVariable
+// swagger:response ActionVariable
+type swaggerResponseActionVariable struct {
+	// in:body
+	Body api.ActionVariable `json:"body"`
+}
+
+// VariableList
+// swagger:response VariableList
+type swaggerResponseVariableList struct {
+	// in:body
+	Body []api.ActionVariable `json:"body"`
+}