implementation of auth store complete

auth/callback.go

auth/manager_test.go

auth/request.go

auth/store/authID.go

auth/store/confirmation.go

auth/store/confirmation_test.go

auth/store/deletion.go

auth/store/fingerprint.go

auth/store/previousNegotiations.go

auth/store/previousNegotiations_test.go

auth/store/receivedRequest.go

auth/store/request.go

auth/store/sentRequest.go

auth/store/sentRequestHandler.go

auth/store/store.go

auth/store/store_test.go

e2e/ratchet/partner/relationship_test.go