希望Tabs的页签位置是否支持自定义

@Entry  
@Component  
struct TabsExample {  
  @State fontColor: string = '#182431'  
  @State selectedFontColor: string = '#007DFF'  
  @State currentIndex: number = 0  
  private controller: TabsController = new TabsController()  
  
  @Builder tabBuilder(index: number, name: string) {  
    Column() {  
      Flex({ direction: FlexDirection.Row }){  
        Text(name)  
          .fontColor(this.currentIndex === index ? this.selectedFontColor : this.fontColor)  
          .fontSize(16)  
          .fontWeight(this.currentIndex === index ? 500 : 400)  
          .lineHeight(22)  
          .margin({ top: 17, bottom: 7 })  
      }  
      Divider()  
        .strokeWidth(2)  
        .color('#007DFF')  
        .opacity(this.currentIndex === index ? 1 : 0)  
    }.width('100%')  
  }  
  
  build() {  
    Column() {  
      Tabs({ barPosition: BarPosition.Start, index: this.currentIndex, controller: this.controller }) {  
        TabContent() {  
          Column().width('100%').height('100%').backgroundColor('#00CB87')  
        }.tabBar(this.tabBuilder(0, 'green'))  
  
        TabContent() {  
          Column().width('100%').height('100%').backgroundColor('#007DFF')  
        }.tabBar(this.tabBuilder(1, 'blue'))  
      }  
      .vertical(false)  
      .barMode(BarMode.Fixed)  
      .barWidth(360)  
      .barHeight(56)  
      .animationDuration(400)  
      .onChange((index: number) => {  
        this.currentIndex = index  
      })  
      .width(360)  
      .height(296)  
      .margin({ top: 52 })  
      .backgroundColor('#F1F3F5')  
    }.width('100%')  
  }  
}  
@Entry  
@Component  
struct TabDemo5 {  
  @State tabArray: Array<number> = [0, 1]  
  @State focusIndex: number = 0  
  @State index: number = 0  
  private controller: TabsController = new TabsController()  
  
  // 自定义单独的页签  
  @Builder  
  Tab(tabName: string, tabItem: number, tabIndex: number) {  
    Column() {  
      Text(tabName).fontSize(18)  
    }  
    .width(100)  
    .height(40)  
    .borderRadius({ topLeft: 10, topRight: 10 })  
    .onClick(() => {  
      this.controller.changeIndex(tabIndex)  
      this.focusIndex = tabIndex  
    })  
    .backgroundColor(tabIndex === this.focusIndex ? "#ffffffff" : "#ffb7b7b7")  
    .justifyContent(FlexAlign.Center)  
  }  
  build() {  
    Column() {  
      Column() {  
        // 页签  
        Row({ space: 7 }) {  
          Scroll() {  
            Row() {  
              ForEach(this.tabArray, (item: number, index: number) => {  
                this.Tab("页" + item, item, index)  
              })  
            }  
            .justifyContent(FlexAlign.Start)  
          }  
          //设置左对齐  
          .align(Alignment.Start)  
          .scrollable(ScrollDirection.Horizontal)  
          .scrollBar(BarState.Off)  
          .width('100%')  
          .backgroundColor("#ffb7b7b7")  
        }  
        .width('100%')  
        .backgroundColor("#ffb7b7b7")  
  
        //tabs  
        Tabs({ barPosition: BarPosition.Start, controller: this.controller }) {  
          ForEach(this.tabArray, (item: number, index: number) => {  
            TabContent() {  
              Text('我是页面 ' + item + " 的内容")  
                .height(300)  
                .width('100%')  
                .fontSize(30)  
            }  
            .backgroundColor('#ffbdf38d')  
          })  
        }  
        .barHeight(0)  
        // .animationDuration(100)  
        .onChange((index: number) => {  
          console.log('foo change')  
          this.focusIndex = index  
        })  
      }  
      .alignItems(HorizontalAlign.Start)  
      .width('100%')  
    }  
    .height('100%')  
  }  
}