feat(ui): Implement stepper component

[gibsonliketheguitar]

Description

Implement Stepper Components

Related Issues

Resolves #521

Testing

• Ran testing suites.

  
  PASS  packages/ui/src/components/modal/modal.test.tsx
  PASS  packages/website/src/features/instructions/how-it-works-button.test.tsx
  FAIL  packages/website/src/widgets/header/header.test.tsx

Test Suites: 1 failed, 4 passed, 5 total Tests: 32 passed, 32 total Snapshots: 0 total Time: 19.803 s

File                                           | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s 
-----------------------------------------------|---------|----------|---------|---------|-------------------
 ui/src/components/stepper                     |   66.66 |    77.27 |    62.5 |   70.37 |                   
  index.ts                                     |       0 |      100 |       0 |       0 | 1-2               
  stepper-circle.tsx                           |     100 |      100 |     100 |     100 |                   
  stepper-container.tsx                        |     100 |        0 |     100 |     100 | 8                 
  stepper-item.tsx                             |     100 |     62.5 |     100 |     100 | 15-16,18          
  stepper-line.tsx                             |     100 |       80 |     100 |     100 | 14                
  stepper.stories.tsx                          |       0 |      100 |       0 |       0 | 2-37   

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- [x] I have linted and formatted my changes to follow the code style of this repository.
- [] I have updated our documentation, accordingly.
- [x] I have checked currently opened pull requests to ensure that there are no pending pull request for the same changes or issues.
- [x] I have confirmed that this pull request fully meets the acceptance criteria for all related issues listed above.

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