KNEL: import STEP0 shared-services content (overview, questions, policies, price book, inventory template)

src/SUMMARY.md

@@ -1,3 +1,10 @@
 # Summary
 
 - [Introduction](./introduction.md)
+
+## KNEL — Shared Services
+- [Overview](./knel/overview.md)
+- [Questions](./knel/questions.md)
+- [Policies](./knel/policies.md)
+- [Internal Price Book](./knel/internal-price-book.md)
+- [Inventory Template](./knel/inventory-template.md)