Text组件如何加载Unicode字符
===================

在Text组件的content参数中使用字符串，并在字符串中转义Unicode编码。示例代码如下：

@Entry
@Component
struct TextView {
  build() {
    Column() {
      Text("\\u{1F468}\\u200D\\u{1F469}\\u200D\\u{1F467}\\u200D\\u{1F466}")
        .width(100)
        .height(100)
        .fontSize(50)
    }
  }
}

字符串转Unicode编码：

let chineseStr: string = "中文";
const encodedStr = Array.from(chineseStr).map(char =>\`\\\\u${char.codePointAt(0)!.toString(16).padStart(4, '0')}\`).join("");

Unicode编码转字符串：

let unicodeStr: string = "\\\\u4e2d\\\\u6587";
const decodedStr = unicodeStr.replace(/\\\\u(\[\\dA-Fa-f\]{4})/g,(\_,p1:string) => String.fromCodePoint(parseInt(p1, 16)));