feat(docs): generate gif for better doc integration #47

Job	Run time
test (1.21.x, _test.flappy)	36s
build (1.21.x, amd64, linux, ./pkg/amino/cmd/aminoscan)	15s
build (1.21.x, amd64, linux, ./pkg/amino/cmd/goscan)	8s
build (1.21.x, amd64, linux, ./pkg/autofile/cmd)	13s
test (1.21.x, _test.pkg.amino)	1m 33s
build (1.21.x, amd64, linux, ./pkg/iavl/cmd/iaviewer)	15s
test (1.21.x, _test.pkg.bft)	2m 21s
build (1.22.x, amd64, linux, ./pkg/amino/cmd/aminoscan)	12s
build (1.22.x, amd64, linux, ./pkg/amino/cmd/goscan)	6s
test (1.21.x, _test.pkg.others)	1m 25s
build (1.22.x, amd64, linux, ./pkg/autofile/cmd)	12s
test (1.22.x, _test.flappy)	40s
build (1.22.x, amd64, linux, ./pkg/iavl/cmd/iaviewer)	11s
test (1.22.x, _test.pkg.amino)	1m 32s
test (1.22.x, _test.pkg.bft)	15m 29s
test (1.22.x, _test.pkg.others)	1m 33s
upload-coverage	1s
	26m 42s

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