Move slack adapter to separate package #1084

Job	Run time
initialize	9s
lint (ubuntu-22.04, 3.9)	36s
build_sdist (ubuntu-22.04, 3.9)	53s
build (ubuntu-22.04, 3.8, cp38, false)	34m 8s
build (ubuntu-22.04, 3.9, cp39, false)	34m 15s
build (ubuntu-22.04, 3.10, cp310, false)	34m 0s
build (ubuntu-22.04, 3.11, cp311, false)	34m 8s
build (ubuntu-22.04, 3.12, cp312, false)	34m 14s
build (macos-14, 3.11, cp311, false)	19m 6s
build (macos-14, 3.12, cp312, false)	19m 22s
build (windows-2019, 3.12, cp312, false)	1h 15m 48s
test_sdist	0s
test_dependencies (ubuntu-20.04, 3.9, sqlalchemy>=2)	59s
test (ubuntu-22.04, 3.8, false)	1m 54s
test_dependencies (ubuntu-20.04, 3.9, sqlalchemy<2)	1m 6s
test_dependencies (ubuntu-20.04, 3.9, numpy==1.19.5)	1m 17s
test (ubuntu-22.04, 3.9, false)	2m 8s
test (ubuntu-22.04, 3.10, false)	1m 55s
test (ubuntu-22.04, 3.11, false)	2m 6s
test (ubuntu-22.04, 3.12, false)	1m 59s
test (macos-14, 3.11, false)	2m 29s
test (macos-14, 3.12, false)	2m 28s
test (windows-2019, 3.12, false)	5m 28s
publish_release_artifacts	0s
	5h 10m 28s

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