完善各模块的视频上传功能，显示正在上传和上传完成提示

Tcsm

2023-08-09 1a55d5008d2484e4730a5e8919cdb95e14da98d5

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// https://github.com/tc39/proposal-relative-indexing-method
require('../modules/es.string.at-alternative');
require('../modules/esnext.array.at');
require('../modules/esnext.typed-array.at');