Add linting with goimports to the pre-commit configuration

This will run the Go tool `goimports` against the repository if it
contains any Go files. This tool bundles the functionality of `go fmt`
with the additional benefit of sorting Go imports much like the isort
tool we use for Python code.

.github/workflows/build.yml

@@ -109,6 +109,11 @@ jobs:
           PACKAGE_URL: github.com/go-critic/go-critic/cmd/gocritic
           PACKAGE_VERSION: ${{ steps.setup-env.outputs.go-critic-version }}
         run: go install ${PACKAGE_URL}@${PACKAGE_VERSION}
+      - name: Install goimports
+        env:
+          PACKAGE_URL: golang.org/x/tools/cmd/goimports
+          PACKAGE_VERSION: ${{ steps.setup-env.outputs.goimports-version }}
+        run: go install ${PACKAGE_URL}@${PACKAGE_VERSION}
       - name: Install gosec
         env:
           PACKAGE_URL: github.com/securego/gosec/v2/cmd/gosec

.pre-commit-config.yaml

@@ -78,6 +78,8 @@ repos:
       - id: go-vet-repo-mod
       # GoSec
       - id: go-sec-repo-mod
+      # goimports
+      - id: go-imports-repo
 
   # Nix hooks
   - repo: https://github.com/nix-community/nixpkgs-fmt