feat(gpu_prover): new GPU prover based on unrolled circuits #714

Job	Run time
tests	1m 53s
cargo fmt	46s
ISA tests for simulator	1m 24s
build_cli_no_verifiers	13m 4s
build_cli_no_verifiers_512	10m 3s
build_cli_with_verify	1m 58s
circuits_generated	4m 0s
risc_v_tests_delegations	1m 14s
full_recursion_fast	2h 0m 24s
build_verifier	17m 47s
large_example	5m 6s
basic_example	3m 2s
delegation_example	5m 20s
full_recursion	-1s
verification_example	-1s
oh_bender_incremental_proofs	-1s
	3h 5m 58s

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