add health check point

[mohamedachrefhacheni]

This PR introduces a health check endpoint to monitor service availability and database connectivity.
Impact:
Enables better monitoring
Helps DevOps with uptime checks
Follows REST API best practices

[YuriiMotov]

@mohamedachrefhacheni, thanks for your interest and efforts!

We already have health check endpoint:

full-stack-fastapi-template/backend/app/api/routes/utils.py

Lines 29 to 31 in 8af907c

	@router.get("/health-check/")
	async def health_check() -> bool:
	return True

So, changes should be made there instead of adding one more.

Also, all changes should be covered by tests.

Would you like to continue working on this?