Add random forest classifier for tomographer

[hangqianjun]

Change Description

• My PR includes a link to the issue that I am addressing Add random forest classifier for tomographer #2

Solution Description

Moved random forest classifier for the tomographer class from rail_base to rail_sklearn due to its dependence on sklearn.

Code Quality

• I have read the Contribution Guide
• My code follows the code style of this project
• My code builds (or compiles) cleanly without any errors or warnings
• My code contains relevant comments and necessary documentation

Project-Specific Pull Request Checklists

Bug Fix Checklist

• My fix includes a new test that breaks as a result of the bug (if possible)
• My change includes a breaking change
  • My change includes backwards compatibility and deprecation warnings (if possible)

New Feature Checklist

• I have added or updated the docstrings associated with my feature using the NumPy docstring format
• I have updated the tutorial to highlight my new feature (if appropriate)
• I have added unit/End-to-End (E2E) test cases to cover my new feature
• My change includes a breaking change
  • My change includes backwards compatibility and deprecation warnings (if possible)

Documentation Change Checklist

• Any updated docstrings use the NumPy docstring format

Build/CI Change Checklist

• If required or optional dependencies have changed (including version numbers), I have updated the README to reflect this
• If this is a new CI setup, I have added the associated badge to the README

Other Change Checklist

• Any new or updated docstrings use the NumPy docstring format.
• I have updated the tutorial to highlight my new feature (if appropriate)
• I have added unit/End-to-End (E2E) test cases to cover any changes
• My change includes a breaking change
  • My change includes backwards compatibility and deprecation warnings (if possible)

[codecov]

Welcome to Codecov 🎉

Once merged to your default branch, Codecov will compare your coverage reports and display the results in this comment.

Thanks for integrating Codecov - We've got you covered ☂️

[hangqianjun]

Unit tests pass on local machine but not on GitHub. Waiting for new release of rail to include classifier class.

[aimalz]

I requested some minor changes to the class names for consistency and made the suggestion to isolate the color-making function in this module to make it easy to swap out when we unify all the calculations of colors that appear in so many of the algos modules.

[aimalz]

Nothing needs to be changed here, but I just want to note re: LSSTDESC/rail_base#39 that this will be the first instance of IDs in the RAIL-iverse so should be considered in decision-making about how to consistently reference these throughout src/rail code.

[aimalz]

Looks good! This can be merged as soon as the tests are passing.