ngx-image-video-gallery v5.22.0

Forked from https://lukasz-galka.github.io/ngx-gallery-demo/ and modified on fast to handle videos. Code could be found at https://github.com/Muhammad-Altabba/ngx-gallery. Most Likely this npm package will not be maintained and it has to be deleted once this pull request is accepted: https://github.com/lukasz-galka/ngx-gallery/pull/257

For other details check: https://www.npmjs.com/package/ngx-gallery