基础库2.23.0。opencv导出opencv.js以及opencv_js.wasm文件，通过brotli压缩opencv_js.wasm文件。修改opencv.js的部分方法。引入小程序是初始化opecv_js.wasm.br失败。opencv.js参考修改https://github.com/sanyuered/WeChat-MiniProgram-AR-WASM/blob/main/package_lesson2/assets/opencv_exec.js