column新增required属性控制标题红色星号的展示

src/Table.js

@@ -482,6 +482,7 @@ class Table extends Component {
         dataindex:column.dataIndex,
         textAlign:column.textAlign,
         titleAlign: column.titleAlign, // 标题水平对齐方式
+        required: column.required, // 标题是否展示必填标志
       };
       if (column.onHeadCellClick) {
         cell.onClick = column.onHeadCellClick;

src/Table.scss

@@ -466,6 +466,9 @@ $icon-color:#505F79;
       // overflow: hidden;
       // white-space: nowrap;
       // text-overflow: ellipsis;
+      .required {
+        color: #F22C1D;
+      }
       .bee-table-column-sorter {
         position: relative;
         margin-left: 4px;
@@ -488,6 +491,7 @@ $icon-color:#505F79;
           cursor: pointer;
         }
         
+       
       }
 
       .bee-table-column-sorter-down.on .uf-triangle-down,

src/TableHeader.js

@@ -784,6 +784,7 @@ class TableHeader extends Component {
               if(!da.fixed ){
                   return (<th {...da}  {...keyTemp} className={thClassName} data-th-fixed={da.fixed} data-line-key={da.key}
                   data-line-index={columIndex} data-th-width={da.width} data-type="draggable">
+                      {da.required ? <span className='required'>*</span>:''}
                       {da.children}
                       {
                         dragborder && columIndex != _rowLeng? <div ref={el => (this.gap = el)} data-line-key={da.key}