feat(cf-table): 新增表格组件

新增 cf-table 组件，包含以下功能：
- 支持数据展示和列配置
- 提供表头和表体插槽功能
- 支持最大高度设置
- 实现粘性表头效果
- 提供空数据展示
- 包含完整的组件结构和样式

miniprogram/pages/components/cf-table/cf-table.wxml

@@ -0,0 +1,41 @@
+<view class="table-box" style="max-height:{{maxHeight}}">
+	<view class="table table-sticky">
+		<view class="table-column-group">
+			<block wx:for="{{columns}}" wx:key="index">
+				<view class="col" style="width: {{item.width}}" />
+			</block>
+		</view>
+		<view class="tr">
+			<block wx:if="{{useTheadSlot}}">
+				<slot name="thead" />
+			</block>
+			<block wx:else>
+				<block wx:for="{{columns}}" wx:key="index">
+					<view class="th">{{item.title}}</view>
+				</block>
+			</block>
+		</view>
+	</view>
+	<view class="table table-content">
+		<view class="table-column-group">
+			<block wx:for="{{columns}}" wx:key="index">
+				<view class="col" style="width: {{item.width}}" />
+			</block>
+		</view>
+		<block wx:if="{{useTbodySlot}}">
+			<slot name="tbody" />
+		</block>
+		<block wx:else>
+			<view wx:if="{{data.length == 0}}" class="tr" style="height: 32px" />
+			<block wx:for="{{data}}" wx:key="index" wx:for-item="record">
+				<view class="tr">
+					<block wx:for="{{columns}}" wx:key="index">
+						<view class="td">{{record[item.dataIndex]}}</view>
+					</block>
+				</view>
+			</block>
+		</block>
+	</view>
+</view>
+<view wx:if="{{!useTbodySlot && data.length == 0}}" class="empty-data">暂无数据</view>
+