add categories shimmer#27

EmanAbobakr wants to merge 3 commits intoeslamfaisal:ecommerce/features/home-screeneslamfaisal/android-development-training:ecommerce/features/home-screenfrom

EmanAbobakr:ecommerce/tasks/categories_shimmerEmanAbobakr/android-development-training:ecommerce/tasks/categories_shimmerCopy head branch name to clipboard