chore: convert CAS integration code to typescript (#31492)

apps/meteor/app/cas/server/cas_rocketchat.js

apps/meteor/app/cas/server/cas_server.js

apps/meteor/app/cas/server/index.ts

apps/meteor/server/configuration/cas.ts

apps/meteor/server/importPackages.ts

apps/meteor/server/lib/cas/createNewUser.ts

apps/meteor/server/lib/cas/findExistingCASUser.ts

apps/meteor/server/lib/cas/logger.ts

apps/meteor/server/lib/cas/loginHandler.ts

apps/meteor/server/lib/cas/middleware.ts

apps/meteor/server/lib/cas/updateCasService.ts

apps/meteor/server/main.ts

packages/cas-validate/src/validate.ts

packages/cas-validate/tsconfig.json

packages/tools/src/getObjectKeys.ts

packages/tools/src/index.ts