Stack: add sum and histogram

[opatiny]

• feat: basic Stack API
• feat(Stack): implement constructor
• feat(Stack): implement functions to get values
• feat(Stack): implement minImage
• feat(Stack): implement maxImage
• feat(Stack): implement iterator
• test(Stack): add min and max image tests
• feat(Stack): implement getStackFromFolder for debug
• fix(Stack): enhance Stack properties
• feat(Stack): implement map and filter
• feat(Stack): implement meanImage
• feat(Stack): implement medianImage
• test: enhance stack coverage
• test: fix test after merge
• chore: fix eslint errors
• feat(Stack): implement sum
• feat(Stack): implement histogram
• refactor: move stack functions to subfolder

[codecov[bot]]

Codecov Report

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

Comparison is base (0c347c8) 98.61% compared to head (08cb6a1) 98.62%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #420 +/- ## ======================================= Coverage 98.61% 98.62% ======================================= Files 232 234 +2 Lines 5986 6018 +32 Branches 1249 1252 +3 ======================================= + Hits 5903 5935 +32 Misses 80 80 Partials 3 3 ```

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