Android 通用图标生成器

https://romannurik.github.io/AndroidAssetStudio/icons-generic.html#source.type=clipart&source.clipart=ac_unit&source.space.trim=1&source.space.pad=0&size=32&padding=8&color=rgba(0%2C%200%2C%200%2C%200.54)&name=ic_ac_unit