Add basic jackknife for information imbalance (WIP)

[AldoGl]

Proposed changes

• A basic estimator for mean and standard deviation of the information imbalance using the Jackknife method

• A new module and a new class to conveniently manipulate different datasets (eventually it would be a good idea to move here many of the information imbalance methods)

Types of changes

What types of changes does your code introduce? Put an x in the boxes that apply

• [ ] Bugfix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)

[AldoGl]

@imacocco you already gave a look at the changes. I still need to fix the docs test but let me know if the rest looks ok

[codecov-commenter]

Codecov Report

Patch coverage: 92.10% and project coverage change: +0.18% :tada:

Comparison is base (807a60d) 80.10% compared to head (3799b8c) 80.29%.

:exclamation: Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #98 +/- ## ========================================== + Coverage 80.10% 80.29% +0.18% ========================================== Files 14 15 +1 Lines 2393 2431 +38 ========================================== + Hits 1917 1952 +35 - Misses 476 479 +3 ``` | [Files Changed](https://app.codecov.io/gh/sissa-data-science/DADApy/pull/98?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=None) | Coverage Δ | | |---|---|---| | [dadapy/data\_sets.py](https://app.codecov.io/gh/sissa-data-science/DADApy/pull/98?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=None#diff-ZGFkYXB5L2RhdGFfc2V0cy5weQ==) | `91.89% <91.89%> (ø)` | | | [dadapy/\_\_init\_\_.py](https://app.codecov.io/gh/sissa-data-science/DADApy/pull/98?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=None#diff-ZGFkYXB5L19faW5pdF9fLnB5) | `100.00% <100.00%> (ø)` | |

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

[AldoGl]

Tests passing!