04 - Linear model

[teubert]

Moved the linear model example into 04_new models. Added a header and updated references to point to other examples

[github-actions[bot]]

Thank you for opening this PR. Each PR into dev requires a code review. For the code review, look at the following:

• [ ] Reviewer (someone other than author) should look for bugs, efficiency, readability, testing, and coverage in examples (if relevant).
• [ ] Ensure that each PR adding a new feature should include a test verifying that feature.
• [ ] All errors from static analysis must be resolved.
• [ ] Review the test coverage reports (if there is a change) - will be added as comment on PR if there is a change
• [ ] Review the software benchmarking results (if there is a change) - will be added as comment on PR
• [ ] Any added dependencies are included in requirements.txt, setup.py, and dev_guide.rst (this document)
• [ ] All warnings from static analysis must be reviewed and resolved - if deemed appropriate.

[codecov-commenter]

Codecov Report

Merging #90 (51d0541) into dev (a421b92) will not change coverage. Report is 3 commits behind head on dev. The diff coverage is n/a.

@@           Coverage Diff           @@
##              dev      #90   +/-   ##
=======================================
  Coverage   84.26%   84.26%           
=======================================
  Files          99       99           
  Lines       10167    10167           
=======================================
  Hits         8567     8567           
  Misses       1600     1600