🌱 add a verify rule for golang files import order

This PR uses the [gci tool](https://github.com/daixiang0/gci) to make all go files' import section with a specific order, it will organize import with group with order：
1. standard library modules
2. 3rd party modules
3. modules in OCM org, like the `open-cluster-management.io/api`
4. current project `open-cluster-management.io/ocm` modules

developers can use the `make format-gofiles-import` to format the import automatically and the `make verify-gofiles-import-format` to check for any violation.

Signed-off-by: zhujian <jiazhu@redhat.com>

.github/workflows/pre.yml

@@ -29,19 +29,10 @@ jobs:
           go-version: ${{ env.GO_VERSION }}
       - name: verify
         run: make verify
-
-  verify-deps:
-    name: verify-deps
-    runs-on: ubuntu-latest
-    steps:
-      - name: checkout code
-        uses: actions/checkout@v3
-      - name: install Go
-        uses: actions/setup-go@v3
-        with:
-          go-version: ${{ env.GO_VERSION }}
       - name: verify-deps
         run: make verify-deps
+      - name: verify-gofiles-import-format
+        run: make verify-gofiles-import-format
 
   build:
     name: build

Makefile

@@ -68,6 +68,21 @@ verify-gocilint:
 	go install github.com/golangci/golangci-lint/cmd/golangci-lint@v1.45.2
 	golangci-lint run --timeout=3m --modules-download-mode vendor ./...
 
+install-golang-gci:
+	go install github.com/daixiang0/gci@v0.10.1
+
+format-gofiles-import: install-golang-gci
+	gci write --skip-generated -s standard -s default -s "prefix(open-cluster-management.io)" -s "prefix(open-cluster-management.io/ocm)" cmd pkg test dependencymagnet
+
+verify-gofiles-import-format: install-golang-gci
+	@output=$$(gci diff --skip-generated -s standard -s default -s "prefix(open-cluster-management.io)" -s "prefix(open-cluster-management.io/ocm)" cmd pkg test dependencymagnet); \
+	if [ -n "$$output" ]; then \
+	    echo "Diff output is not empty: $$output"; \
+	    exit 1; \
+	else \
+	    echo "Diff output is empty"; \
+	fi
+
 verify: verify-crds
 
 ensure-operator-sdk: