Fixes for IO-SEA integrations and add docs

src/base/crud/requests/TypedCrudRequest.h

src/base/network/server/basic_server/TcpServer.cc

src/base/storage/clients/file/FileKeyValueStoreClient.cc

src/base/storage/clients/file/FileKeyValueStoreClient.h

src/hestia/web/http/index.html

src/hsm/base_types/HsmAction.cc

src/hsm/base_types/HsmAction.h

src/hsm/hsm_service/HsmService.cc

src/hsm/hsm_service/HsmService.h

src/integrations/Datamover.cc

src/integrations/Datamover.h

src/integrations/Hestia_HSM.png

src/integrations/PolicyEngine.cc

src/integrations/PolicyEngine.h

src/integrations/README.md

src/integrations/SyncTool.cc

src/integrations/SyncTool.h

src/integrations/datamover_main.cc

src/integrations/policy_main.cc

src/integrations/sync_main.cc