Tests

Add example reward calculator usage #6260

# to view logs

Job	Run time
Fuzz	12m 58s
e2e	10m 5s
Unit (macos-12)	8m 49s
e2e_existing_network	3m 37s
Unit (ubuntu-20.04)	6m 46s
Unit (ubuntu-22.04)	6m 53s
Unit (windows-2022)	10m 52s
Protobuf Lint	5s
Unit (custom-arm64-focal)	12m 26s
Unit (custom-arm64-jammy)	12m 13s
Up-to-date protobuf	31s
Up-to-date mocks	2m 23s
Up-to-date go.mod and go.sum	13s
Lint	3m 12s
Build Antithesis avalanchego images	5m 32s
Image build	14m 37s
Build Antithesis xsvm images	8m 21s
Upgrade	3m 16s
	2h 2m 49s

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