add process questions and deming cycle

[avallecam]

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This adds

• process-assessment questions from slides in https://epiverse-trace.github.io/research-compendium/instructor/materials.html
• reference to the Deming cycle https://www.lean.org/lexicon-terms/pdca/

[github-actions]

Thank you!

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Rendered Changes

🔍 Inspect the changes: https://github.com/epiverse-trace/research-compendium/compare/md-outputs..md-outputs-PR-26

The following changes were observed in the rendered markdown documents:

 introduction.md | 47 ++++++++++++++++++++++++++++++++++++++++++++++-
 md5sum.txt      |  2 +-
 2 files changed, 47 insertions(+), 2 deletions(-)

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⏱️ Updated at 2023-12-14 17:51:15 +0000

[avallecam]

minor edits