feat: 添加cmd_tip快捷方法

Signed-off-by: 502647092 <admin@yumc.pw>

src/main/java/pw/yumc/YumCore/tellraw/Tellraw.java

@@ -46,6 +46,19 @@ public class Tellraw {
         System.out.println(Tellraw.create("命令").command("yum list").tip("点击查看插件列表").toJsonString());
     }
 
+    /**
+     * 命令与提示
+     *
+     * @param command
+     *            命令
+     * @param tip
+     *            提示
+     * @return {@link Tellraw}
+     */
+    public Tellraw cmd_tip(final String command, final String... tip) {
+        return command(command).tip(tip);
+    }
+
     /**
      * 执行命令
      *
@@ -140,6 +153,9 @@ public class Tellraw {
      * @return {@link Tellraw}
      */
     public Tellraw tip(final List<String> texts) {
+        if (texts.size() == 0) {
+            return this;
+        }
         final StringBuffer text = new StringBuffer();
         for (final String t : texts) {
             text.append(t).append("\n");