Feat: finished implementing value transfers

packages/binary/address/address.go

packages/binary/signature/ed25119/ed25119.go

packages/binary/signature/ed25119/key_pair.go

packages/binary/signature/ed25119/private_key.go

packages/binary/signature/ed25119/public_key.go

packages/binary/signature/ed25119/signature.go

packages/binary/transaction/payload/valuetransfer/value.go

...binary/transaction/payload/valuetransfer/valuetransfer.go

packages/binary/transaction/test/transaction_test.go

packages/ledgerstate/coloredcoins/color.go

packages/ledgerstate/coloredcoins/colored_balance.go

packages/ledgerstate/outputs.png

packages/ledgerstate/outputs1.png

packages/ledgerstate/outputs2.png

packages/ledgerstate/transfer/output_reference.go