Implement UNSAFE_KECCAK_FINALIZE hint

[fmoletta]

Depends on #246 & #272

[codecov-commenter]

Codecov Report

Merging #271 (e286be0) into main (067f139) will increase coverage by 58.56%.
The diff coverage is 46.29%.

@@            Coverage Diff            @@
##           main     #271       +/-   ##
=========================================
+ Coverage      0   58.56%   +58.56%     
=========================================
  Files         0       41       +41     
  Lines         0     5247     +5247     
=========================================
+ Hits          0     3073     +3073     
- Misses        0     1918     +1918     
- Partials      0      256      +256     

Files Changed	Coverage Δ
pkg/hints/hint_utils/ids_manager.go	68.13% <0.00%> (ø)
pkg/hints/keccak_hints.go	61.29% <56.09%> (ø)
pkg/hints/hint_processor.go	98.19% <100.00%> (ø)

... and 38 files with indirect coverage changes

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