Adding decision tree

docs/decision-tree/WIN-data-sharing-decision-tree.drawio

docs/decision-tree/checklist-cani.md

docs/decision-tree/credit.csv

docs/decision-tree/decision-tree-appendicies.md

docs/decision-tree/decision-tree-refactored.md

docs/decision-tree/decision-tree.md

...sion-tree/img/WIN-data-sharing-decision-tree-draft2-8.svg

...cision-tree/img/WIN-data-sharing-decision-tree-draft2.svg

docs/decision-tree/img/diagram-spotlight-mockup.pptx

docs/decision-tree/img/logo-dataSharing.png

docs/decision-tree/img/p1.png

docs/decision-tree/img/p2.png

docs/decision-tree/img/p3.png

docs/decision-tree/img/p4.png

docs/decision-tree/img/p5.png

docs/decision-tree/img/process-key.png

docs/decision-tree/img/process-overview-key.png

docs/decision-tree/img/process-overview.png

docs/decision-tree/img/sharing-questions_w800px.png

docs/getting-started.md