Implement fake sprite .meta generator, import sprite atlas directly to unity.

SpriteMetaBuilder is the thing.

I initialize it every load file/folder, add sprite and texture pair every time a sprite read.

In File - Export SpriteMetas is the shortcut to call the method. Select a folder then everything is done.

Only outputs atlas, you can also outputs all sprites by commenting the continue; in export method.

Fast implement, forgive my ugly codes.

fancybit‘s modify: add assets PathID display. 增加了资源id显示，方便查找资源之间的关联

release download: 生成过的软件百度网盘地址： https://pan.baidu.com/s/1gmbbddCWt-dj8YJ50MwElg