Refactor: merged transferoutput and transfer package

packages/ledgerstate/coloredcoins/color.go

packages/ledgerstate/coloredcoins/colored_balance.go

packages/ledgerstate/ledgerstate.go

packages/ledgerstate/ledgerstate_test.go

packages/ledgerstate/outputs.png

packages/ledgerstate/outputs1.png

packages/ledgerstate/outputs2.png

packages/ledgerstate/reality.go

packages/ledgerstate/transfer/output_reference.go

packages/ledgerstate/transfer/transfer.go

packages/ledgerstate/transfer_output.go

packages/ledgerstate/transfer_output_reference.go

packages/ledgerstate/transfer_output_test.go

packages/ledgerstate/visualizer.go