feat: add txtar driver for gnoland integration test #823

Job	Run time
build (1.20.x, amd64, linux, ./pkg/amino/cmd/aminoscan)	14s
test (1.20.x, _test.flappy)	35s
build (1.20.x, amd64, linux, ./pkg/amino/cmd/goscan)	18s
test (1.20.x, _test.pkg.amino)	4m 49s
build (1.20.x, amd64, linux, ./pkg/autofile/cmd)	10s
test (1.20.x, _test.pkg.bft)	4m 43s
build (1.20.x, amd64, linux, ./pkg/iavl/cmd/iaviewer)	17s
test (1.20.x, _test.pkg.others)	6m 30s
build (1.21.x, amd64, linux, ./pkg/amino/cmd/aminoscan)	12s
test (1.21.x, _test.flappy)	38s
build (1.21.x, amd64, linux, ./pkg/amino/cmd/goscan)	9s
test (1.21.x, _test.pkg.amino)	5m 1s
build (1.21.x, amd64, linux, ./pkg/autofile/cmd)	10s
test (1.21.x, _test.pkg.bft)	5m 12s
build (1.21.x, amd64, linux, ./pkg/iavl/cmd/iaviewer)	12s
test (1.21.x, _test.pkg.others)	7m 13s
upload-coverage	5s
	36m 28s

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