Change `from` pattern for copying font files

**Current situation:** [Line 77 of the Webpack configuration](https://github.com/Comcast/patternlab-edition-node-webpack/blob/93d87fc5d1ce09d24aa8a85e7aeef87a445ec816/webpack.config.babel.js#L77) defines the glob pattern for copying fonts from the `source` to the `public` folder. The pattern is currently defined as `./*`.

**Proposed improvement:** I would like to update this pattern to `./**/*.*`, as is already the case for images, so that font files which are located in their own subfolders also match the pattern. In my experience, this is frequently the case and changing the pattern would save others the time I spent last Friday trying to debug why my fonts are not being copied over. 😅

I'm happy to open a pull request if you consider this a desirable improvement.

打开 webpack.config.babel.js 并检查第 77 行，然后将字体复制模式与图像复制模式进行比较。验证已完成的更改是否匹配嵌套源子文件夹中的字体文件，并将它们复制到相应的公共位置。

由索引模型根据 Issue 内容生成。