Combine datasets & refactor observations to response configs #5628

Job	Run time
build-mac-for-tags	0s
Run C++ tests and coverage (ubuntu-latest)	1m 54s
build-linux (3.10) / build-wheels	1m 41s
build-linux (3.12) / build-wheels	1m 44s
build-linux (3.11) / build-wheels	1m 40s
build-linux (3.8) / build-wheels	1m 38s
build-linux (3.9) / build-wheels	1m 42s
build-mac (3.12, macos-latest) / build-wheels	2m 16s
test-mac-for-tags	0s
Test ert docs (3.12, ubuntu-latest)	1m 56s
test-linux (gui-test, 3.12, ubuntu-latest) / Run ert tests	2m 15s
test-linux (gui-test, 3.11, ubuntu-latest) / Run ert tests	2m 15s
test-linux (integration-tests, 3.11, ubuntu-latest) / Run ert tests	2m 15s
test-linux (gui-test, 3.8, ubuntu-latest) / Run ert tests	1m 22s
test-linux (integration-tests, 3.12, ubuntu-latest) / Run ert tests	2m 14s
test-linux (integration-tests, 3.8, ubuntu-latest) / Run ert tests	1m 22s
test-linux (unit-tests, 3.11, ubuntu-latest) / Run ert tests	2m 14s
test-linux (unit-tests, 3.12, ubuntu-latest) / Run ert tests	2m 10s
test-linux (unit-tests, 3.8, ubuntu-latest) / Run ert tests	1m 31s
test-slurm (ubuntu-latest, 3.11) / Run ert tests	1m 56s
test-slurm (ubuntu-latest, 3.12) / Run ert tests	1m 57s
test-slurm (ubuntu-latest, 3.8) / Run ert tests	1m 29s
test-mac (gui-test, 3.12, macos-latest) / Run ert tests	1m 16s
test-mac (unit-tests, 3.12, macos-latest) / Run ert tests	1m 40s
test-mac (integration-tests, 3.12, macos-latest) / Run ert tests	1m 29s
Publish to PyPI	1s
	41m 57s

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