feat(gpu_prover): new GPU prover based on unrolled circuits #724

Job	Run time
cargo fmt	36s
tests	1m 26s
ISA tests for simulator	58s
full_recursion_fast	2h 12m 10s
circuits_generated	4m 51s
build_cli_no_verifiers	14m 23s
risc_v_tests_delegations	43s
build_cli_no_verifiers_512	9m 20s
build_cli_with_verify	1m 7s
build_verifier	41s
delegation_example	0s
large_example	0s
basic_example	0s
verification_example	0s
full_recursion	0s
oh_bender_incremental_proofs	0s
	2h 46m 15s

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