feat(Skeleton): new component

src/theme/index.ts

@@ -7,4 +7,5 @@ export { default as container } from './container'
 export { default as icons } from './icons'
 export { default as kbd } from './kbd'
 export { default as popover } from './popover'
+export { default as skeleton } from './skeleton'
 export { default as tooltip } from './tooltip'

src/theme/skeleton.ts

@@ -0,0 +1,3 @@
+export default {
+  base: 'animate-pulse rounded-md bg-gray-50 dark:bg-gray-800'
+}