Tutorial directives

[RLKRo]

Description

Add two tutorial directives (one for inserting installation cells, and one for inserting documentation links).

Tutorial dependencies separated from test dependencies in setup.py.

Also, added a test to ensure that all dependencies listed in tutorials are correct (the test is currently disabled in all workflows since is takes ~2 minutes to complete). Removed most of other test_tutorials tests since this one covers them. (returned because coverage)

I'm currently considering removing the test and instead converting tutorials to notebooks (and running them) inside isolated venvs (and using converted notebooks in documentation).

Checklist

• I have covered the code with tests
• I have added comments to my code to help others understand it
• I have updated the documentation to reflect the changes
• I have performed a self-review of the changes

[pseusys]

I would also like to see documentation linking implementation here.