编译命令行中如何传递参数并且在Hvigor编译阶段扩展插件中获取到
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使用hvigor命令：

 > hvigorw -s -p key1=value2222

获取自定义参数代码：

_// hvigorfile.ts_
import { harTasks } from '@ohos/hvigor-ohos-plugin';
import { hvigor } from '@ohos/hvigor';

export default {
    system: harTasks,  /\* Built-in plugin of Hvigor. It cannot be modified. \*/
    plugins:\[\]         /\* Custom plugin to extend the functionality of Hvigor. \*/
}
console.log('value===', hvigor.getParameter().getExtParam('key1'));