增加全局IDType的设置，用于控制部分无法自动识别的数据库的ID生成策略

Author: davidfantasy

src/main/java/com/github/davidfantasy/mybatisplus/generatorui/GeneratorConfig.java

@@ -1,5 +1,6 @@
 package com.github.davidfantasy.mybatisplus.generatorui;
 
+import com.baomidou.mybatisplus.annotation.IdType;
 import com.baomidou.mybatisplus.generator.config.ITypeConvert;
 import com.baomidou.mybatisplus.generator.config.rules.DateType;
 import com.github.davidfantasy.mybatisplus.generatorui.mbp.NameConverter;
@@ -77,6 +78,11 @@ public class GeneratorConfig {
      */
     private ITypeConvert typeConvert;
 
+    /**
+     * 全局指定数据表中ID的生成模式，影响自动生成的Entity中ID字段的注解
+     */
+    private IdType idType;
+
     public NameConverter getAvailableNameConverter() {
         if (nameConverter == null) {
             nameConverter = new NameConverter() {

src/main/java/com/github/davidfantasy/mybatisplus/generatorui/service/MbpGeneratorService.java

@@ -81,6 +81,7 @@ public void genCodeBatch(GenSetting genSetting, List<String> tables) {
         BeanUtils.copyProperties(userConfig.getEntityStrategy(), mpg.getGlobalConfig());
         mpg.getGlobalConfig().setAuthor(genSetting.getAuthor());
         mpg.getGlobalConfig().setFileOverride(genSetting.isOverride());
+        mpg.getGlobalConfig().setIdType(generatorConfig.getIdType());
         StrategyConfig strategy = getCurrentStrategy(userConfig);
         NameConverter nameConverter = generatorConfig.getAvailableNameConverter();
         strategy.setNameConvert(new INameConvert() {