Reorg to align with dbt-core: Part II #1547

Job	Run time
linter	1m 7s
build packages	14s
unit test / python 3.8	53s
unit test / python 3.9	51s
unit test / python 3.10	52s
unit test / python 3.11	47s
verify packages / python 3.8 / ubuntu-latest	1m 0s
verify packages / python 3.9 / ubuntu-latest	1m 4s
verify packages / python 3.10 / ubuntu-latest	1m 6s
verify packages / python 3.11 / ubuntu-latest	1m 7s
verify packages / python 3.8 / macos-latest	2m 15s
verify packages / python 3.9 / macos-latest	3m 8s
verify packages / python 3.10 / macos-latest	2m 52s
verify packages / python 3.11 / macos-latest	1m 35s
verify packages / python 3.8 / windows-latest	3m 34s
verify packages / python 3.9 / windows-latest	2m 46s
verify packages / python 3.10 / windows-latest	3m 19s
verify packages / python 3.11 / windows-latest	3m 37s
	32m 7s

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