Promote security knowledge from community to Microsoft layer (#49)

* Promote security knowledge from community to Microsoft layer

Pure git-mv relocation of the SECURITY domain from the community layer to the Microsoft layer. No content changes.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Address review feedback on security knowledge promotion

- do-not-grant-rights-beyond-a-users-entitlement.md: drop the See sample
  reference to a .good.al file that does not exist
- Remove the 'Contributions welcome' boilerplate line from
  compose-permission-sets, prefer-oauth2, and protect-sensitive-data
- protect-sensitive-data-in-temporary-tables: remove the pointless
  DeleteAll on the locally scoped temp buffer in the good sample and
  reword Best Practice to note local buffers are cleaned up automatically
- Drop guard-bulk-operations-with-istemporary from the promotion; it
  stays in the community layer pending a decision on whether it is security

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

* Remove Contributions welcome boilerplate from do-not-grant article for consistency

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

---------

Co-authored-by: Jesper Schulz-Wedde <jesper.schulzwedde@microsoft.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

microsoft/knowledge/security/compose-permission-sets-with-included-sets.bad.al

@@ -0,0 +1,21 @@
+// Two role-shaped sets, each re-enumerating the same objects. Adding a new
+// Sales table means editing both sets by hand; forgetting one creates a
+// subtle authorization bug where one role was updated and its sibling was not.
+
+permissionset 50110 "Sales Order Processor"
+{
+    Assignable = true;
+    Permissions =
+        tabledata Customer = IM,
+        tabledata "Sales Header" = IMD,
+        tabledata "Sales Line" = IMD;
+}
+
+permissionset 50111 "Sales Viewer"
+{
+    Assignable = true;
+    Permissions =
+        tabledata Customer = R,
+        tabledata "Sales Header" = R,
+        tabledata "Sales Line" = R;
+}