Document writing an Event Sink and Source #3617

Job	Run time
Build specification using nix	1m 19s
Benchmarks (hydra-node, tx-cost, --output-directory $(pwd)/../benchmarks)	2m 39s
Build & test (plutus-cbor)	1m 23s
Benchmarks (hydra-node, micro, -o $(pwd)/../benchmarks/ledger-bench.html)	1m 53s
Build & test (plutus-merkle-tree)	1m 23s
Build haddock using nix	1m 29s
Benchmarks (hydra-cluster, bench-e2e, datasets datasets/3-nodes.cbor datasets/1-node.cbor --outpu...	5m 2s
Build & test (hydra-plutus)	1m 26s
Benchmarks (plutus-merkle-tree, on-chain-cost, $(pwd)/../benchmarks)	1m 38s
Build & test (hydra-tui)	2m 12s
Build & test (hydra-node)	4m 24s
Build & test (hydra-cluster)	7m 49s
Publish benchmark results	0s
Publish test results	7s
Documentation	1m 31s
	34m 15s

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