feat(react): add `Skeleton` & `InputAdornment` components #373

Job	Run time
🌳 ESLint (STATIC ANALYSIS) (lts/*)	4m 17s
💅 Storybook (lts/*)	5m 21s
ʦ Typecheck (STATIC ANALYSIS) (lts/*)	3m 44s
👾 Unit Tests (lts/*)	6m 37s
🚧 Build (lts/*)	3m 42s
	23m 41s

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