feat(gnoclient): support fetching blocks, block results, latest block number #4069

Job	Run time
build (1.21.x, amd64, linux, ./pkg/amino/cmd/aminoscan)	8s
build (1.21.x, amd64, linux, ./pkg/amino/cmd/goscan)	6s
test (1.21.x, _test.flappy)	32s
build (1.21.x, amd64, linux, ./pkg/autofile/cmd)	23s
test (1.21.x, _test.pkg.amino)	1m 29s
build (1.21.x, amd64, linux, ./pkg/iavl/cmd/iaviewer)	11s
test (1.21.x, _test.pkg.bft)	2m 51s
build (1.22.x, amd64, linux, ./pkg/amino/cmd/aminoscan)	17s
build (1.22.x, amd64, linux, ./pkg/amino/cmd/goscan)	5s
test (1.21.x, _test.pkg.others)	1m 33s
build (1.22.x, amd64, linux, ./pkg/autofile/cmd)	22s
test (1.22.x, _test.flappy)	35s
build (1.22.x, amd64, linux, ./pkg/iavl/cmd/iaviewer)	12s
test (1.22.x, _test.pkg.amino)	1m 35s
test (1.22.x, _test.pkg.bft)	7m 16s
test (1.22.x, _test.pkg.others)	1m 26s
upload-coverage	1s
	19m 2s

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