feat(hints): Add BLAKE2S_FINALIZE hint variant

[fmoletta]

TITLE

Description

Description of the pull request changes and motivation.

Checklist

• Linked to Github Issue
• Unit tests added
• Integration tests added.
• This change requires new documentation.
  • Documentation has been added/updated.
  • CHANGELOG has been updated.

[codecov]

Codecov Report

Merging #1072 (dc7b214) into main (f19cc88) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main    #1072   +/-   ##
=======================================
  Coverage   98.10%   98.11%           
=======================================
  Files          84       84           
  Lines       34179    34205   +26     
=======================================
+ Hits        33533    33559   +26     
  Misses        646      646           

Impacted Files	Coverage Δ
..._processor/builtin_hint_processor/blake2s_utils.rs	99.78% <100.00%> (+0.01%)	⬆️
...int_processor/builtin_hint_processor_definition.rs	99.04% <100.00%> (+<0.01%)	⬆️

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[github-actions]

Benchmark Results for unmodified programs 🚀

Command	Mean [s]	Min [s]	Max [s]	Relative
base blake2s_integration_benchmark	3.551 ± 0.051	3.512	3.654	1.00
head blake2s_integration_benchmark	3.650 ± 0.079	3.541	3.781	1.03 ± 0.03

Command	Mean [s]	Min [s]	Max [s]	Relative
base compare_arrays_200000	4.278 ± 0.101	4.168	4.513	1.00
head compare_arrays_200000	4.287 ± 0.088	4.179	4.464	1.00 ± 0.03

Command	Mean [s]	Min [s]	Max [s]	Relative
base dict_integration_benchmark	3.175 ± 0.046	3.096	3.252	1.00
head dict_integration_benchmark	3.177 ± 0.057	3.119	3.319	1.00 ± 0.02

Command	Mean [s]	Min [s]	Max [s]	Relative
base factorial_multirun	5.157 ± 0.138	5.052	5.521	1.00
head factorial_multirun	5.199 ± 0.077	5.113	5.358	1.01 ± 0.03

Command	Mean [s]	Min [s]	Max [s]	Relative
base fibonacci_1000_multirun	4.133 ± 0.064	4.040	4.256	1.00 ± 0.02
head fibonacci_1000_multirun	4.128 ± 0.049	4.061	4.215	1.00

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
base field_arithmetic_get_square_benchmark	141.1 ± 2.6	138.8	147.5	1.00
head field_arithmetic_get_square_benchmark	141.2 ± 5.1	135.2	150.6	1.00 ± 0.04

Command	Mean [s]	Min [s]	Max [s]	Relative
base integration_builtins	3.997 ± 0.049	3.924	4.109	1.00
head integration_builtins	4.047 ± 0.047	3.989	4.137	1.01 ± 0.02

Command	Mean [s]	Min [s]	Max [s]	Relative
base keccak_integration_benchmark	3.866 ± 0.078	3.762	4.012	1.00
head keccak_integration_benchmark	3.890 ± 0.042	3.837	3.980	1.01 ± 0.02

Command	Mean [s]	Min [s]	Max [s]	Relative
base linear_search	4.304 ± 0.031	4.253	4.369	1.00
head linear_search	4.360 ± 0.074	4.287	4.548	1.01 ± 0.02

Command	Mean [s]	Min [s]	Max [s]	Relative
base math_cmp_and_pow_integration_benchmark	3.545 ± 0.052	3.475	3.641	1.00
head math_cmp_and_pow_integration_benchmark	3.585 ± 0.046	3.523	3.639	1.01 ± 0.02

Command	Mean [s]	Min [s]	Max [s]	Relative
base math_integration_benchmark	3.220 ± 0.037	3.148	3.262	1.00
head math_integration_benchmark	3.244 ± 0.109	3.152	3.513	1.01 ± 0.04

Command	Mean [s]	Min [s]	Max [s]	Relative
base memory_integration_benchmark	2.870 ± 0.037	2.827	2.935	1.00
head memory_integration_benchmark	2.916 ± 0.114	2.813	3.179	1.02 ± 0.04

Command	Mean [s]	Min [s]	Max [s]	Relative
base operations_with_data_structures_benchmarks	2.862 ± 0.100	2.761	3.123	1.00
head operations_with_data_structures_benchmarks	2.902 ± 0.060	2.827	2.980	1.01 ± 0.04

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
base pedersen	993.0 ± 20.9	961.5	1024.4	1.01 ± 0.03
head pedersen	981.5 ± 15.4	962.3	1009.7	1.00

Command	Mean [s]	Min [s]	Max [s]	Relative
base poseidon_integration_benchmark	1.829 ± 0.040	1.771	1.904	1.00
head poseidon_integration_benchmark	1.849 ± 0.036	1.807	1.920	1.01 ± 0.03

Command	Mean [s]	Min [s]	Max [s]	Relative
base secp_integration_benchmark	3.300 ± 0.032	3.254	3.351	1.00
head secp_integration_benchmark	3.352 ± 0.045	3.305	3.430	1.02 ± 0.02

Command	Mean [s]	Min [s]	Max [s]	Relative
base set_integration_benchmark	2.441 ± 0.046	2.371	2.545	1.00
head set_integration_benchmark	2.443 ± 0.028	2.399	2.487	1.00 ± 0.02

Command	Mean [s]	Min [s]	Max [s]	Relative
base uint256_integration_benchmark	4.790 ± 0.083	4.668	4.897	1.01 ± 0.02
head uint256_integration_benchmark	4.741 ± 0.026	4.694	4.779	1.00

[MegaRedHand]

Missing a call in the integration test. Otherwise LGTM 👍