feat(react): add `StepLabel`, `StepContent`, `Step` and `Stepper` components #559

Job	Run time
🌳 ESLint (STATIC ANALYSIS) (lts/*)	1m 52s
💅 Storybook (lts/*)	1m 49s
ʦ Typecheck (STATIC ANALYSIS) (lts/*)	2m 49s
👾 Unit Tests	0s
🚧 Build	0s
	6m 30s

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