Added ARIA attributes to essential elements

[SisiVero]

Fixes

• Fixes [Bug] Enhance Accessibility: Missing ARIA Roles #214 by @Silvia-Wachira

Description

The PR addresses the issue of adding ARIA attributes to essential components relative to legaldb.

Technical details

The footer and header files were untouched as changes from the vocabulary will be effected in it.

Checklist

• My pull request has a descriptive title (not a vague title like Update index.md).
• My pull request targets the default branch of the repository (main or master).
• My commit messages follow best practices.
• My code follows the established code style of the repository.
• I added or updated tests for the changes I made (if applicable).
• I added or updated documentation (if applicable).
• I tried running the project locally and verified that there are no
  visible errors.

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Developer Certificate of Origin

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[TimidRobot]

Please resolve conflicts and remove whitespace changes (you've replaced unix LF line endings with Windows CRLF line endings)

[SisiVero]

Please resolve conflicts and remove whitespace changes (you've replaced unix LF line endings with Windows CRLF line endings)

I'll resolve them asap.
Thank you