Add dm to worker

indexedDb/dm/implementation.go

indexedDb/dm/init.go

indexedDb/dm/model.go

indexedDb/tag.go

indexedDb/utils.go

indexedDb/utils_test.go

indexedDbWorker/channels/implementation.go

indexedDbWorker/channels/implementation_test.go

indexedDbWorker/channels/init.go

indexedDbWorker/dm/handlers.go

indexedDbWorker/dm/implementation.go

indexedDbWorker/dm/init.go

indexedDbWorker/dm/main.go

indexedDbWorker/dm/model.go