Home page UI changes, refactoring and API integration.

Description:
We need to address several UI inconsistencies and code quality issues in our application. The tasks are as follows:

UI Enhancements:

Ensure that the Probes Box on the homepage has a shadow.
Remove the shadow from the Registration Box on the homepage to maintain visual consistency.
Update the display text for time units:
Use "document" (singular) instead of "documents."
Display "seconds" (plural) for any duration greater than 0 second.
Code Quality Improvements:

In the home.service.ts file, rename the getversionInfo function to follow camel case convention.
Integrate the versionInfo API into the application.
Fix focus fixation issues with the sidenav component.
Resolve all lint issues across the codebase.
Acceptance Criteria:
The Probes Box and Registration Box on the homepage should have consistent shadow properties as specified.
The text should correctly display "document" and "seconds" based on the described conditions.
The getversionInfo function should be renamed to getVersionInfo in home.service.ts.
The versionInfo API should be successfully integrated and functional.
Sidenav focus issues should be fixed, providing a seamless user experience.
All existing lint issues should be resolved, ensuring clean and maintainable code.