feat(vwc-side-drawer): add modal support

[rinaok]

Description

Motivation and Context

All Submissions:

• I followed the guidelines in our Contributing document?
• My code follows the code style of this project
• I checked to ensure there aren't other open Pull Requests for the same update/change?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

How Has This Been Tested?

• A11y tests
• Ui tests
• Unit and coverage
• Test for Aria matching roles
• Check the markup
• Custom Control Accessible Development Checklist
• Check unused/missing dependencies

Checklist:

• API Changes are documented in code and exported accordingly (JSDoc)

[yinonov]

• Add a11y tests
• Test focus trapping
• Escape closes modal
• Focus trap removed

[yinonov]

https://jsdoc.app/tags-fires.html will help producing docs on our opened/closed events

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

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