[Feature] batched trajectories - SliceSampler compatibility #9333

Job	Run time
build-wheel-linux (3.8, cp38-cp38, --index-url https://download.pytorch.org/whl/cpu, "['cpu', '11...	1m 37s
build-wheel-mac (3.8, 3.8)	1m 56s
build-wheel-linux (3.9, cp39-cp39, --index-url https://download.pytorch.org/whl/cpu, "['cpu', '11...	1m 32s
build-wheel-windows (3.8, 3.8)	2m 20s
build-wheel-linux (3.10, cp310-cp310, --index-url https://download.pytorch.org/whl/cpu, "['cpu', ...	1m 42s
build-wheel-mac (3.9, 3.9)	1m 45s
build-wheel-windows (3.9, 3.9)	2m 13s
build-wheel-linux (3.11, cp311-cp311, --index-url https://download.pytorch.org/whl/cpu, "['cpu', ...	1m 41s
build-wheel-mac (3.10, 3.10.3)	2m 39s
build-wheel-windows (3.10, 3.10.3)	3m 11s
build-wheel-mac (3.11, 3.11)	2m 36s
build-wheel-windows (3.11, 3.11)	2m 13s
test-wheel (linux, ubuntu-20.04, 3.8)	2m 10s
test-wheel (linux, ubuntu-20.04, 3.9)	2m 19s
test-wheel (linux, ubuntu-20.04, 3.10)	2m 29s
test-wheel (linux, ubuntu-20.04, 3.11)	2m 27s
test-wheel (mac, macos-11, 3.8)	2m 42s
test-wheel (mac, macos-11, 3.9)	2m 52s
test-wheel (mac, macos-11, 3.10)	2m 44s
test-wheel (mac, macos-11, 3.11)	2m 45s
test-wheel-windows (3.8)	5m 33s
test-wheel-windows (3.9)	5m 57s
test-wheel-windows (3.10)	5m 4s
test-wheel-windows (3.11)	5m 32s
	1h 7m 59s

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