Add verify (tidy/lint) target (#1247)

Added a verify target, to which other checks can be added.
Added lint and tidy to the verify target.
This will be used during github workflows/CI to make sure everything
is "tidied".
Updated the `sanity` check to use this verify target.

.github/workflows/sanity.yaml

@@ -20,5 +20,5 @@ jobs:
           go-version-file: "go.mod"
       - name: Install goimports
         run: go install golang.org/x/tools/cmd/goimports@latest
-      - name: Run sanity checks
-        run: make lint && git diff --exit-code
+      - name: Run verify checks
+        run: make verify

Makefile

@@ -63,6 +63,15 @@ static: build
 unit:
 	$(GO) test -coverprofile=coverage.out $(SPECIFIC_UNIT_TEST) $(SPECIFIC_SKIP_UNIT_TEST) $(TAGS) $(TEST_RACE) -count=1 ./pkg/... ./alpha/...
 
+.PHONY: tidy
+tidy:
+	go mod tidy
+	go mod verify
+
+.PHONY: verify
+verify: tidy lint
+	git diff --exit-code
+
 .PHONY: sanity-check
 sanity-check:
 	# Build a container with the most recent binaries for this project.