feat: output inference (setup/main split), approval workflow-only, packages adoption; add Rust integration tests + insta snapshots; move examples to integration_tests; CI step for integration tests

Author: ndbroadbent

.github/workflows/ci.yml

@@ -86,3 +86,6 @@ jobs:
 
       - name: Build
         run: nx run cigen:build
+
+      - name: Run integration tests
+        run: nx run cigen:integration

.gitignore

@@ -5,6 +5,11 @@ PROJECT_PLAN.md
 
 examples/**/build/
 examples/**/.circleci/
+integration_tests/**/.circleci/
+integration_tests/**/build/
+
+/.circleci/
+/build/
 
 # Nx
 .nx/