Remove underscore prefix from test file names

[fmoletta]

Rename _keccak.cairo -> keccak.cairo Rename _keccak_alternative_hint.cairo -> _keccak_alternative_hint.cairo

[github-actions[bot]]

Benchmark Results for unmodified programs :rocket:

Command	Mean [s]	Min [s]	Max [s]	Relative
base big_factorial	2.277 ± 0.024	2.257	2.340	1.00
head big_factorial	2.285 ± 0.016	2.267	2.307	1.00 ± 0.01

Command	Mean [s]	Min [s]	Max [s]	Relative
base big_fibonacci	2.230 ± 0.012	2.218	2.252	1.00
head big_fibonacci	2.237 ± 0.005	2.230	2.248	1.00 ± 0.01

Command	Mean [s]	Min [s]	Max [s]	Relative
base blake2s_integration_benchmark	8.181 ± 0.037	8.120	8.234	1.00
head blake2s_integration_benchmark	8.251 ± 0.206	8.121	8.817	1.01 ± 0.03

Command	Mean [s]	Min [s]	Max [s]	Relative
base compare_arrays_200000	2.293 ± 0.019	2.271	2.319	1.00
head compare_arrays_200000	2.340 ± 0.057	2.298	2.495	1.02 ± 0.03

Command	Mean [s]	Min [s]	Max [s]	Relative
base dict_integration_benchmark	1.446 ± 0.014	1.434	1.481	1.00
head dict_integration_benchmark	1.475 ± 0.025	1.456	1.536	1.02 ± 0.02

Command	Mean [s]	Min [s]	Max [s]	Relative
base field_arithmetic_get_square_benchmark	1.296 ± 0.015	1.280	1.322	1.00
head field_arithmetic_get_square_benchmark	1.303 ± 0.006	1.295	1.315	1.01 ± 0.01

Command	Mean [s]	Min [s]	Max [s]	Relative
base integration_builtins	8.237 ± 0.080	8.166	8.393	1.00
head integration_builtins	8.300 ± 0.088	8.195	8.444	1.01 ± 0.01

Command	Mean [s]	Min [s]	Max [s]	Relative
base keccak_integration_benchmark	8.465 ± 0.079	8.372	8.557	1.00
head keccak_integration_benchmark	8.465 ± 0.092	8.378	8.635	1.00 ± 0.01

Command	Mean [s]	Min [s]	Max [s]	Relative
base linear_search	2.335 ± 0.057	2.297	2.484	1.00 ± 0.03
head linear_search	2.328 ± 0.015	2.313	2.356	1.00

Command	Mean [s]	Min [s]	Max [s]	Relative
base math_cmp_and_pow_integration_benchmark	1.574 ± 0.005	1.566	1.586	1.00
head math_cmp_and_pow_integration_benchmark	1.601 ± 0.005	1.597	1.611	1.02 ± 0.00

Command	Mean [s]	Min [s]	Max [s]	Relative
base math_integration_benchmark	1.443 ± 0.006	1.436	1.456	1.00
head math_integration_benchmark	1.473 ± 0.010	1.461	1.494	1.02 ± 0.01

Command	Mean [s]	Min [s]	Max [s]	Relative
base memory_integration_benchmark	1.260 ± 0.012	1.251	1.288	1.00
head memory_integration_benchmark	1.264 ± 0.012	1.255	1.292	1.00 ± 0.01

Command	Mean [s]	Min [s]	Max [s]	Relative
base operations_with_data_structures_benchmarks	1.624 ± 0.011	1.614	1.649	1.00
head operations_with_data_structures_benchmarks	1.653 ± 0.008	1.643	1.665	1.02 ± 0.01

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
base pedersen	607.0 ± 5.9	601.3	622.3	1.00 ± 0.01
head pedersen	606.5 ± 6.6	602.4	624.5	1.00

Command	Mean [s]	Min [s]	Max [s]	Relative
base poseidon_integration_benchmark	1.059 ± 0.006	1.053	1.069	1.00 ± 0.01
head poseidon_integration_benchmark	1.059 ± 0.005	1.052	1.067	1.00

Command	Mean [s]	Min [s]	Max [s]	Relative
base secp_integration_benchmark	1.927 ± 0.008	1.918	1.939	1.00
head secp_integration_benchmark	1.944 ± 0.009	1.935	1.966	1.01 ± 0.01

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
base set_integration_benchmark	770.9 ± 1.7	768.8	773.5	1.00
head set_integration_benchmark	773.4 ± 2.0	770.6	776.3	1.00 ± 0.00

Command	Mean [s]	Min [s]	Max [s]	Relative
base uint256_integration_benchmark	4.551 ± 0.045	4.494	4.611	1.00
head uint256_integration_benchmark	4.583 ± 0.038	4.550	4.640	1.01 ± 0.01

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (3b5be72) 97.14% compared to head (a9c8e84) 97.14%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1588 +/- ## ======================================= Coverage 97.14% 97.14% ======================================= Files 91 91 Lines 37185 37185 ======================================= Hits 36124 36124 Misses 1061 1061 ```

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