tests

[ENH] add trials tutorial notebook #985

Job	Run time
test-pip (3.11, windows-latest)	20m 4s
docs (ubuntu-latest)	32s
build-and-test-pip (3.9, ubuntu-latest)	15m 24s
doctests (3.10, ubuntu-latest)	1m 9s
build-and-test-pip (3.10, ubuntu-latest)	15m 44s
test-conda (3.11, ubuntu-latest)	47s
conda (3.11, macos-12)	1m 48s
build-and-test-pip (3.11, ubuntu-latest)	17m 55s
conda (3.11, macos-13)	2m 30s
build-and-test-pip (3.12, ubuntu-latest)	15m 53s
test-pip-MPI (3.9, ubuntu-latest)	16m 17s
	1h 48m 3s

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