feat(docs): generate gif for better doc integration #58

Job	Run time
build (1.21.x, amd64, linux, ./pkg/amino/cmd/aminoscan)	17s
test (1.21.x, _test.flappy)	35s
build (1.21.x, amd64, linux, ./pkg/amino/cmd/goscan)	7s
test (1.21.x, _test.pkg.amino)	1m 42s
build (1.21.x, amd64, linux, ./pkg/autofile/cmd)	18s
test (1.21.x, _test.pkg.bft)	1m 43s
build (1.21.x, amd64, linux, ./pkg/iavl/cmd/iaviewer)	15s
test (1.21.x, _test.pkg.others)	1m 23s
build (1.22.x, amd64, linux, ./pkg/amino/cmd/aminoscan)	12s
test (1.22.x, _test.flappy)	30s
build (1.22.x, amd64, linux, ./pkg/amino/cmd/goscan)	10s
test (1.22.x, _test.pkg.amino)	1m 26s
build (1.22.x, amd64, linux, ./pkg/autofile/cmd)	13s
test (1.22.x, _test.pkg.bft)	1m 45s
build (1.22.x, amd64, linux, ./pkg/iavl/cmd/iaviewer)	10s
test (1.22.x, _test.pkg.others)	1m 34s
upload-coverage	1s
	12m 21s

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