add fmt and check for formatting errors

.circleci/config.yml

@@ -17,6 +17,17 @@ jobs:
       - image: golang:1.15
     steps:
       - checkout
+      - run:
+          name: Enforce Go Formatted Code
+          command: |
+            go fmt ./...
+            if [[ -z $(git status --porcelain) ]]; then
+              echo "Git directory is clean."
+            else
+              echo "Git directory is dirty. Run make fmt locally and commit any formatting fixes or generated code."
+              git status --porcelain
+              exit 1
+            fi
       - run: make install-tools
       - run: make test
       - run: