feat(main): add stopwatch feature

[nullsmegh]

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[nullsmegh]

Introduction

The pull request introduces the play, pause, lap and reset features to the stopwatch. The stopwatch now:

• The stopwatch should start counting when the user clicks the start button.
• The stopwatch should stop counting when the user clicks the stop button.
• The stopwatch should reset to zero when the user clicks the reset button.
• The stopwatch should record and display laps when user clicks the lap button.

The stopwatch also features theme switching, where the color schemes be switched for more interactivity.

The styles are implemented using CSS BEM pattern and tests are added for the Stopwatch.tsx file, verifying the various functionalities.

The design style inspired by neobrutalist design style and follows bold typography, rounded shadows and utilizes block like design for the components. Example: gumroad.com

Preview:

https://www.loom.com/share/83e27e47935d4eafaba3ea1c03759e54