feat: add Cognito Identity client and enhance DirectCognitoAuthService for token management and AWS credentials retrieval#150

GuidoBR merged 1 commit intomainModusCreateOrg/app-med-ai-gen:mainfrom

NO-TICKET-FIX-AUTHModusCreateOrg/app-med-ai-gen:NO-TICKET-FIX-AUTHCopy head branch name to clipboard