buildchecker: add command for generating historical trends

Created by: bobheadxi

go run ./dev/buildchecker \
	-buildkite.token=$BUILDKITE_TOKEN \
	-failures.timeout=999 \
	-created.from="2021-08-01" \
	history

2022/01/13 23:04:35 loaded 3716 builds
2022/01/13 23:04:35 inferred 437 builds as failed

Exported: https://docs.google.com/spreadsheets/d/1uDMUWAJeDxI6Xfer4vL_YYszPZaCqp9s8uhsNIv32VY/edit#gid=0

Discussion: https://sourcegraph.slack.com/archives/C02MWRMAFR8/p1642145938000100?thread_ts=1642092534.093300&cid=C02MWRMAFR8