feat(gpu_prover): new GPU prover based on unrolled circuits #716

Job	Run time
ISA tests for simulator	1m 6s
tests	1m 27s
cargo fmt	32s
build_cli_no_verifiers_512	9m 42s
circuits_generated	3m 49s
build_cli_with_verify	1m 22s
build_cli_no_verifiers	11m 4s
full_recursion_fast	2h 5m 30s
risc_v_tests_delegations	51s
build_verifier	53s
basic_example	2m 50s
large_example	4m 57s
delegation_example	5m 29s
verification_example	0s
full_recursion	0s
oh_bender_incremental_proofs	0s
	2h 49m 32s

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