Feat/skeleton loading - Githubissues

Description

Skeleton animation for cards and trending categories

[x] My submission is formatted according to the guidelines in the contributing guide
[x] My addition is ordered alphabetically
[x] My submission has a useful description
[x] Code follows the established CODE_OF_CONDUCT guidelines.
[x] Code has been tested thoroughly and passes all tests.
[x] All commit messages are descriptive and follow the established commit message format.
[x] Pull request title follows the established pull request title format.
[x] Pull request description clearly describes the changes included in the pull request.
[x] The description does not have more than 100 characters
[x] Each table column is padded with one space on either side
[x] I have searched the repository for any relevant issues or pull requests
[x] Any category I am creating has the minimum requirement of 3 items