Start implementing stacks

[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

[codecov[bot]]

Codecov Report

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

Comparison is base (70e18b0) 98.58% compared to head (5446426) 98.61%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #416 +/- ## ========================================== + Coverage 98.58% 98.61% +0.03% ========================================== Files 224 232 +8 Lines 5850 5986 +136 Branches 1238 1249 +11 ========================================== + Hits 5767 5903 +136 Misses 80 80 Partials 3 3 ```

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