[WIP] Embedded Laplace Approximation #4685

Job	Run time
mix fun and prob tests 2 (windows-latest)	1m 13s
mix fun and prob tests 3 (windows-latest)	1m 12s
mix fun and prob tests 5 (ubuntu-24.04-arm)	1m 28s
mix fun and prob tests 5 (windows-latest)	1m 10s
misc tests (windows-latest)	1m 13s
mix fun and prob tests 4 (windows-latest)	1m 9s
mix fun and prob tests 3 (ubuntu-24.04-arm)	1m 27s
mix fun and prob tests 1 (ubuntu-24.04-arm)	1m 26s
fwd tests (windows-latest)	1m 10s
mix fun and prob tests 2 (ubuntu-24.04-arm)	1m 19s
prim tests (windows-latest)	1m 13s
mix fun and prob tests 1 (windows-latest)	1m 12s
rev tests (windows-latest)	1m 10s
misc tests (ubuntu-24.04-arm)	1s
prim tests (ubuntu-24.04-arm)	1m 27s
mix fun and prob tests 4 (ubuntu-24.04-arm)	1s
non-fun mix tests (windows-latest)	1m 9s
rev tests (ubuntu-24.04-arm)	1s
fwd tests (ubuntu-24.04-arm)	1m 26s
non-fun mix tests (ubuntu-24.04-arm)	1m 19s
	21m 46s

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