refactor: Convert Omnichannel `helpers` file to TS (#29656)

apps/meteor/app/livechat/server/api/lib/livechat.ts

apps/meteor/app/livechat/server/api/v1/room.ts

apps/meteor/app/livechat/server/lib/Helper.ts

apps/meteor/app/livechat/server/lib/LivechatTyped.ts

apps/meteor/app/livechat/server/lib/QueueManager.ts

apps/meteor/app/livechat/server/lib/RoutingManager.ts

apps/meteor/app/livechat/server/methods/transfer.ts

...Icon/OmnichannelRoomIcon/OmnichannelAppSourceRoomIcon.tsx

...con/OmnichannelRoomIcon/OmnichannelCoreSourceRoomIcon.tsx

...app/livechat-enterprise/server/hooks/onTransferFailure.ts

...vechat-enterprise/server/lib/AutoTransferChatScheduler.ts

...enterprise/server/services/omnichannel.internalService.ts

apps/meteor/lib/callbacks.ts

apps/meteor/packages/rocketchat-i18n/i18n/en.i18n.json

.../meteor/server/features/EmailInbox/EmailInbox_Incoming.ts

apps/meteor/server/models/raw/LivechatInquiry.ts

apps/meteor/server/models/raw/LivechatRooms.ts

apps/meteor/server/models/raw/VoipRoom.ts

apps/meteor/server/services/omnichannel-voip/service.ts

apps/meteor/tests/end-to-end/api/livechat/05-inquiries.ts