Base classes for creation stages

[ztq1996]

Adding base classes for the creation: noisifier and selector.

work in progress.

Code Quality

• [ ] My code follows the code style of this project
• [ ] I have written unit tests or justified all instances of #pragma: no cover; in the case of a bugfix, a new test that breaks as a result of the bug has been added
• [ ] My code contains relevant comments and necessary documentation for future maintainers; the change is reflected in applicable demos/tutorials (with output cleared!) and added/updated docstrings use the NumPy docstring format
• [ ] Any breaking changes, described above, are accompanied by backwards compatibility and deprecation warnings

[codecov[bot]]

Codecov Report

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

Project coverage is 98.39%. Comparing base (c71ee89) to head (b8ef9c6). Report is 1 commits behind head on main.

:exclamation: Current head b8ef9c6 differs from pull request most recent head f909ad1. Consider uploading reports for the commit f909ad1 to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #96 +/- ## ======================================= Coverage 98.39% 98.39% ======================================= Files 35 35 Lines 1926 1926 ======================================= Hits 1895 1895 Misses 31 31 ```

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