[c][t] Add TTP calls from client

dfssc/cmd/sign.go

dfssc/common/sequence_analysis.go

dfssc/common/sequence_analysis_test.go

dfssc/sign/promises.go

dfssc/sign/protocol.go

dfssc/sign/protocol_test.go

dfssc/sign/server.go

dfssc/sign/starter.go

dfsst/api/resolution.pb.go

dfsst/api/resolution.proto

dfsst/entities/archivesManager.go

dfsst/entities/check_promise.go

dfsst/entities/check_promise_test.go

dfsst/entities/check_request.go

dfsst/entities/signatureArchives.go

dfsst/resolve/resolve.go

dfsst/resolve/resolve_test.go

dfsst/server/server.go