chore(webpack): 自定义解析文件的扩展名

[AllenChinese]

Use command: vue inspect --mode=development > output.js
Before:

extensions: [
      '.mjs',
      '.js',
      '.jsx',
      '.vue',
      '.json',
      '.wasm',
      '.js',
      '.json',
      '.vue',
      '.scss',
      '.html'
    ]

Right Now:

    extensions: [
      '.js',
      '.json',
      '.vue',
      '.scss',
      '.html'
    ]