feat: enhance dropdown functionality and add active state styling; update login page for callback handling

fix: update group ID in QRCodeModal and comment out unused link in Footer config

feat: enhance styling and structure of submit form and success components; update dependencies

fix: update dependencies in package.json and import exportData dynamically in ExportModal

feat: support login callback url

feat: update various components for improved functionality and styling

feat: enhance applicant fetching with search query and pagination support

fix: correct file name formatting in export modal and update confirmation modal text

refactor: refactor code structure for improved readability and maintainability

feat: add environment configuration files and update README for setup instructions

feat: update README

feat: automatically close modal after and remove csv export format

feat: allow support export multi format files

feat[server]: allow get all applicants

feat: small changes