Add previews

.../img/previews/anatoly-mikhaltsov-butterfly-wing-scale.jpg

...ashboard/img/previews/bernard-spragg-new-zealand-fern.jpg

...g/previews/bernie-cetonia-aurata-take-off-composition.jpg

...hboard/img/previews/dejan-krsmanovic-ribbed-red-metal.jpg

apps/dashboard/img/previews/eduardo-neves-pedra-azul.jpg

...oard/img/previews/european-space-agency-barents-bloom.jpg

...dashboard/img/previews/hannes-fritz-flippity-floppity.jpg

apps/dashboard/img/previews/hannes-fritz-roulette.jpg

apps/dashboard/img/previews/hannes-fritz-sea-spray.jpg

apps/dashboard/img/previews/kamil-porembinski-clouds.jpg

apps/dashboard/img/previews/lali-masriera-yellow-bricks.jpg

apps/dashboard/img/previews/nasa-waxing-crescent-moon.jpg

.../dashboard/img/previews/rawpixel-pink-tapioca-bubbles.jpg

apps/dashboard/img/previews/tommy-chau-already.jpg

apps/dashboard/img/previews/tommy-chau-lion-rock-hill.jpg

apps/dashboard/src/components/BackgroundSettings.vue