WIP restructure transferable tokens

cmd/dbGarbageCollector/main.go

config/example-config.yaml

internal/config/config.go

internal/db/db.go

...nal/db/dbrepo/supertokenrepo/shorttokenrepo/shorttoken.go

internal/db/dbrepo/supertokenrepo/supertoken.go

.../db/dbrepo/supertokenrepo/supertokenrepohelper/helpers.go

...l/db/dbrepo/supertokenrepo/transfercoderepo/proxytoken.go

...l/db/dbrepo/supertokenrepo/transfercoderepo/shorttoken.go

...db/dbrepo/supertokenrepo/transfercoderepo/transfercode.go

internal/db/dbrepo/transfercoderepo/transferCode.go

internal/endpoints/revocation/revocationEndpoint.go

internal/endpoints/token/super/transferEndpoint.go

internal/model/responseType.go

internal/supertoken/pkg/supertoken.go

internal/supertoken/restrictions/restriction.go

internal/supertoken/superTokenHandler.go

internal/supertoken/token/token.go

internal/utils/hashUtils/hashUtils.go

internal/utils/utils.go