Reorganize indexedDb

indexedDb/impl/channels/channelsIndexedDbWorker.js

indexedDb/impl/channels/handlers.go

indexedDb/impl/channels/implementation.go

indexedDb/impl/channels/implementation_test.go

indexedDb/impl/channels/init.go

indexedDb/impl/channels/main.go

indexedDb/impl/channels/model.go

indexedDb/impl/dm/dmIndexedDbWorker.js

indexedDb/impl/dm/handlers.go

indexedDb/impl/dm/implementation.go

indexedDb/impl/dm/init.go

indexedDb/impl/dm/main.go

indexedDb/impl/dm/model.go

indexedDb/impl/utils.go

indexedDb/impl/utils_test.go

indexedDb/worker/channels/implementation.go

indexedDb/worker/channels/init.go

indexedDb/worker/channels/tags.go

indexedDb/worker/dm/implementation.go

indexedDb/worker/dm/init.go