DOC add pipeline examples

[Iglesys347]

Pull Request check-list

Please make sure to review and check all of these items:

• Does $ tox pass with this change (including linting)?
• Do the CI tests pass with this change (enable it first in your forked repo and wait for the github action build to finish)?
• Is the new or changed code fully tested?
• Is a documentation update included (if this change modifies existing APIs, or introduces new ones)?
• Is there an example added to the examples folder (if applicable)?
• Was the change added to CHANGES file?

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afterwards / while the PR is open.

Description of change

This PR relates to #1744

I created a simple jupyter example of how to use pipelines with a performance comparison.

[chayim]

Hi @Iglesys347 this is awesome! Any chance you can add this, as a link in the examples.rst?

[codecov-commenter]

Codecov Report

Merging #2240 (2412c5c) into master (bea7299) will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2240   +/-   ##
=======================================
  Coverage   91.85%   91.85%           
=======================================
  Files         108      108           
  Lines       27743    27743           
=======================================
+ Hits        25482    25484    +2     
+ Misses       2261     2259    -2     

Impacted Files	Coverage Δ
tests/test_cluster.py	97.03% <0.00%> (+0.11%)	⬆️

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[Iglesys347]

Hi @chayim, I added the notebook to example.rst and I tested locally (with invoke build-docs) everything seems to work properly.

The CI fails due to an internal server error, I'll try to re-trigger it latter.

[Iglesys347]

All check passes 😄

[dvora-h]

@Iglesys347 Thank you for helping make our documentation better!