FSD: Widget Speakers

[Quiddlee]

📝 Describe the refactoring task

Part of the issue #347

📍 Code location

src/widgets/speakers

✅ Definition of Done (DoD):

speakers.module.scss

1. Refactor speakers.tsx's scss as following

• remove all parent selector & .card-content -> .card-content.
• change all possible values to variables if such exists.
• and everything in your opinion that needs to be refactored
• replace all element selectors by tag with class selector img -> .image

speakers.tsx

1. replace div's with HTML5 tags
2. rename image to something more meaningfull.
3. add descriptive alt attribute
4. encapsulate rolling.scopes@gmail.com email inside shared constant
5. replace EmailIcon with plain Image component

speakers.test.tsx

1. move test file to ui folder