Reorganize the tests into unit/functional/integration/external #67

Job	Run time
pre-commit / pre-commit	19s
pre-commit / lint-extension	1m 54s
codeql / codeql	3m 3s
test-conda / test-conda (ubuntu-latest, 3.11)	4m 58s
test-conda / test-conda (macos-latest, 3.11)	5m 2s
test-conda / test-conda (windows-latest, 3.11)	5m 8s
test-unit-functional-integration / test-pip (3.11, unit)	2m 29s
test-pip / test-pip (3.8, ~=2.0)	3m 14s
test-unit-functional-integration / test-pip (3.11, functional)	3m 30s
test-pip / test-pip (3.9, ~=2.0)	3m 21s
test-unit-functional-integration / test-pip (3.11, integration)	3m 14s
test-pip / test-pip (3.10, ~=2.0)	3m 16s
test-unit-functional-integration / test-pip (3.11, external)	5m 57s
test-ui / test-ui	4m 44s
test-pip / test-pip (3.11, ~=2.0)	3m 21s
test-pip / test-pip (3.12-dev, true)	3m 20s
test-pip / test-pip (3.13-dev, true)	5m 33s
test-pip / test-pip (3.x)	3m 24s
test-pip / test-pip (3.x, ~=3.0)	3m 22s
test-pip / test-pip (3.x, ~=4.0, true)	1m 50s
test-pip / test-pip (3.x, true)	3m 24s
test-pip / test-pip (3.x, true)	3m 45s
build	0s
pass	2s
	1h 18m 10s

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