feat: add auto scroll to new sections when created

[steff456]

Resolves Private-ref: https://tasks.opencraft.com/browse/BB-8220

This PR,

• Creates a generic scroll to reference function under utils.jsx
• Adds an effect for when the list is changed
• Adds the reference to scroll to the last SectionCard item

scroll.mp4

Depends on

• feat: course outline section list #12

Testing instructions

• Follow instructions from the readme
• Checkout branch from feat: create DRF endpoint to get course index context openedx/edx-platform#33667 and run make cms-up in devstack.
• Open any course outline by using this url format: http://localhost:2001/course/course-v1:edX+DemoX+Demo_Course/outline
• Click any of the new section buttons available in the outline

[navinkarkera]

@steff456 Nice work! Just left few suggestions and a question. Also, the tests are failing.

[steff456]

@navinkarkera this one is ready for a final review! All tests are passing now :)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

❗ No coverage uploaded for pull request base (navin/course-outline/section@2bfa367). Click here to learn what that means.

❗ Current head 97ae77e differs from pull request most recent head 37bae58. Consider uploading reports for the commit 37bae58 to get more accurate results

Additional details and impacted files

@@                       Coverage Diff                       @@
##             navin/course-outline/section      #14   +/-   ##
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  Files                                   ?      481           
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  Hits                                    ?     6620           
  Misses                                  ?      832           
  Partials                                ?       28           

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[steff456]

@navinkarkera apparently the CI is failing to upload the coverage test, but the modified test is passing. Please let me know if there's anything I need to do on my side to fix this

[navinkarkera]

@steff456 Nice work!

👍

• I tested this
• I read through the code
• I checked for accessibility issues
• Includes documentation

[steff456]

@navinkarkera I rebased this PR successfully, please let me know if there's anything else needed for this PR.