fix(接口测试): 解决swagger导入部分属性处理问题

--user=郭雨琦
--bug=1012975
[接口测试]github#13228swagger2.0导入接口的请求参数键值均为string类型的map字典，导入MS后在请求参数中缺少这个map
https://www.tapd.cn/55049933/bugtrace/bugs/view/1155049933001012975

backend/src/main/java/io/metersphere/api/dto/definition/parse/Swagger2Parser.java

@@ -303,6 +303,9 @@ public class Swagger2Parser extends SwaggerAbstractParser {
             item.setType("object");
             ModelImpl model = (ModelImpl) schema;
             item.setProperties(parseNewSchemaProperties(model, refSet));
+            if(model.getAdditionalProperties()!=null){
+                item.setAdditionalProperties(parseProperty(model.getAdditionalProperties(), refSet));
+            }
         } else if (schema instanceof AbstractModel) {
             AbstractModel abstractModel = (AbstractModel) schema;
             item.setType("object");
@@ -404,6 +407,9 @@ public class Swagger2Parser extends SwaggerAbstractParser {
                 if(model.getRequired()!=null){
                     item.setRequired(model.getRequired());
                 }
+                if(model.getAdditionalProperties()!=null){
+                    item.setAdditionalProperties(parseProperty(model.getAdditionalProperties(), new HashSet<>()));
+                }
             }
         }else if(schema instanceof AbstractModel){
             AbstractModel abstractModel = (AbstractModel) schema;

backend/src/main/java/io/metersphere/api/dto/definition/request/variable/JsonSchemaItem.java

@@ -21,6 +21,7 @@ public class JsonSchemaItem {
     private List<JsonSchemaItem> items;
     private Map<String, Object> mock;
     private Map<String, JsonSchemaItem> properties;
+    private JsonSchemaItem additionalProperties;
     private List<String> required ;
 
     @JSONField(name = "$schema")

backend/src/main/java/io/metersphere/commons/json/BasicConstant.java

@@ -4,6 +4,7 @@ public class BasicConstant {
     public final static String REQUIRED = "required";
     public final static String ALL_OF = "allOf";
     public final static String PROPERTIES = "properties";
+    public final static String ADDITIONAL_PROPERTIES = "additionalProperties";
     public final static String TYPE = "type";
     public final static String MS_OBJECT = "MS-OBJECT";
     public final static String ARRAY = "array";

backend/src/main/java/io/metersphere/commons/json/JSONSchemaGenerator.java

@@ -54,7 +54,11 @@ public class JSONSchemaGenerator {
                 JsonObject propertyObj = propertiesObj.get(propertyKey).getAsJsonObject();
                 analyzeProperty(rootObj, propertyKey, propertyObj);
             }
-        } else if (object.has(BasicConstant.TYPE) && object.get(BasicConstant.TYPE).getAsString().equals(BasicConstant.ARRAY)) {
+        }else if (object.has(BasicConstant.ADDITIONAL_PROPERTIES)) {
+            JsonObject propertiesObj = object.get(BasicConstant.ADDITIONAL_PROPERTIES).getAsJsonObject();
+            analyzeProperty(rootObj, BasicConstant.ADDITIONAL_PROPERTIES, propertiesObj);
+        }
+        else if (object.has(BasicConstant.TYPE) && object.get(BasicConstant.TYPE).getAsString().equals(BasicConstant.ARRAY)) {
             analyzeProperty(rootObj, BasicConstant.MS_OBJECT, object);
         } else if (object.has(BasicConstant.TYPE) && !object.get(BasicConstant.TYPE).getAsString().equals(BasicConstant.OBJECT)) {
             analyzeProperty(rootObj, object.getAsString(), object);
@@ -94,7 +98,7 @@ public class JSONSchemaGenerator {
                 }
             } else if (propertyObjType.equals(BasicConstant.STRING)) {
                 // 先设置空值
-                concept.put(propertyName, "");
+                concept.put(propertyName,"");
                 if (object.has("format")) {
                     String propertyFormat = object.get("format").getAsString();
                     if (propertyFormat.equals("date-time")) {