feat(blog): store posts in slices & include chronological sorting #2032

Job	Run time
build (1.20.x, amd64, linux, ./pkg/amino/cmd/aminoscan)	12s
test (1.20.x, _test.flappy)	26s
build (1.20.x, amd64, linux, ./pkg/amino/cmd/goscan)	9s
test (1.20.x, _test.pkg.amino)	1m 28s
build (1.20.x, amd64, linux, ./pkg/autofile/cmd)	14s
test (1.20.x, _test.pkg.bft)	2m 23s
build (1.20.x, amd64, linux, ./pkg/iavl/cmd/iaviewer)	17s
test (1.20.x, _test.pkg.others)	2m 22s
build (1.21.x, amd64, linux, ./pkg/amino/cmd/aminoscan)	8s
test (1.21.x, _test.flappy)	18s
build (1.21.x, amd64, linux, ./pkg/amino/cmd/goscan)	9s
test (1.21.x, _test.pkg.amino)	1m 30s
build (1.21.x, amd64, linux, ./pkg/autofile/cmd)	5s
test (1.21.x, _test.pkg.bft)	21m 15s
build (1.21.x, amd64, linux, ./pkg/iavl/cmd/iaviewer)	13s
test (1.21.x, _test.pkg.others)	2m 29s
upload-coverage	0s
	33m 38s

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