NETOBSERV-588 Add IPv4/6 DSCP field to the exported flow (#158)

bpf/flows.c

bpf/types.h

bpf/utils.h

examples/flowlogs-dump/server/flowlogs-dump-collector.go

go.mod

pkg/decode/decode_protobuf.go

pkg/decode/decode_protobuf_test.go

pkg/ebpf/bpf_bpfeb.go

pkg/ebpf/bpf_bpfeb.o

pkg/ebpf/bpf_bpfel.go

pkg/ebpf/bpf_bpfel.o

pkg/exporter/proto.go

pkg/flow/record.go

pkg/flow/record_test.go

pkg/pbflow/flow.pb.go

pkg/pbflow/flow_grpc.pb.go

proto/flow.proto