Multiple fixes (#29)

* Multiple fixes

- add goreleaser to the build / release process
- add kubectl plugin for job graphs visualization
- add installation scripts
- update dependencies

* Update the release & CRD content.

* Next set of improvements.

  Code Quality

  - Label constants: Added LabelWorkflowName, LabelGroupName, LabelJobName, LabelJobID in controllers/definitions.go
  - Removed commented debug code: Cleaned up dead code from multiple files
  - Removed unused dependencyTree field: Cleaned connPackage struct
  - Fixed snake_case variables: Changed to camelCase (runGroup, groupDep, runJob, jobDep, k8sJob)

  Kubernetes Best Practices

  - Finalizers: Implemented handleDeletion() and deleteChildJobs() for proper cleanup
  - Status enum validation: Added +kubebuilder:validation:Enum=pending;running;succeeded;failed;aborted
  - ImagePullPolicy default: Created getImagePullPolicy() helper that defaults to IfNotPresent
  - Resource limits support: Added Resources *corev1.ResourceRequirements to ManagedJobParameters

  Observability

  - Prometheus metrics: Created controllers/metrics.go with counters (jobs created/succeeded/failed), histogram (reconciliation duration), and gauge (active jobs)
  - Structured logging: Added logger field to connPackage, used context-based logging throughout

  Configuration

  - Leader election ID: Made configurable via --leader-election-id flag
  - Development mode: Made configurable via --dev-mode flag and LOG_LEVEL env var

  Performance

  - Dependency lookup optimization: Changed from O(n*m) to O(1) using lookup maps (jobDepMap, groupDepMap)
  - Reconciliation backoff: Added RequeueAfter: 30*time.Second when workflow is running

  Documentation & Testing

  - Godoc documentation: Added comprehensive comments to API types and controller
  - Unit tests: Added helpers_test.go with tests for all helper functions
  - Integration tests: Added managedjob_controller_test.go with Ginkgo/Gomega tests

* Add the helm chart release.

* Add reasonable test coverage.

.github/workflows/autoupdate.yaml

@@ -0,0 +1,18 @@
+name: Autoupdate go.mod and go.sum
+
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: "0 3 * * *"
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  autoupdate:
+    uses: lukaszraczylo/shared-actions/.github/workflows/go-autoupdate.yaml@main
+    with:
+      go-version: "1.21"
+      release-workflow: "release.yaml"
+    secrets: inherit

.github/workflows/ci.yaml

@@ -0,0 +1,21 @@
+name: Pull Request
+
+on:
+  pull_request:
+    branches:
+      - main
+  push:
+    branches:
+      - "**"
+      - "!main"
+
+permissions:
+  contents: read
+  pull-requests: write
+
+jobs:
+  pr-checks:
+    uses: lukaszraczylo/shared-actions/.github/workflows/go-pr.yaml@main
+    with:
+      go-version: "1.21"
+    secrets: inherit

.github/workflows/release.yaml

@@ -0,0 +1,82 @@
+name: Release
+
+on:
+  workflow_dispatch:
+  push:
+    paths-ignore:
+      - "**.md"
+      - "docs/**"
+      - "config/samples/**"
+    branches:
+      - main
+
+permissions:
+  id-token: write
+  contents: write
+  packages: write
+  deployments: write
+
+jobs:
+  release:
+    uses: lukaszraczylo/shared-actions/.github/workflows/go-release.yaml@main
+    with:
+      go-version: "1.23"
+      docker-enabled: true
+    secrets: inherit
+
+  publish-helm-chart:
+    needs: release
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout operator repo
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Get release version
+        id: version
+        run: |
+          VERSION=$(git describe --tags --abbrev=0 2>/dev/null || echo "0.0.0")
+          VERSION=${VERSION#v}
+          echo "version=$VERSION" >> $GITHUB_OUTPUT
+
+      - name: Setup Helm
+        uses: azure/setup-helm@v4
+        with:
+          version: v3.14.0
+
+      - name: Checkout helm-charts repo
+        uses: actions/checkout@v4
+        with:
+          repository: lukaszraczylo/helm-charts
+          ref: gh-pages
+          path: helm-charts
+          token: ${{ secrets.HELM_CHARTS_TOKEN }}
+
+      - name: Update and package Helm chart
+        run: |
+          VERSION="${{ steps.version.outputs.version }}"
+
+          # Update chart version
+          sed -i "s/^version:.*/version: $VERSION/" charts/jobs-manager-operator/Chart.yaml
+          sed -i "s/^appVersion:.*/appVersion: \"$VERSION\"/" charts/jobs-manager-operator/Chart.yaml
+          sed -i "s/tag:.*/tag: \"$VERSION\"/" charts/jobs-manager-operator/values.yaml
+
+          # Copy updated chart to helm-charts repo
+          cp -R charts/jobs-manager-operator/* helm-charts/charts/jobs-manager-operator/
+
+          # Package chart
+          helm package charts/jobs-manager-operator -d helm-charts/charts/packages/
+
+          # Update index
+          cd helm-charts
+          helm repo index . --url https://lukaszraczylo.github.io/helm-charts/ --merge index.yaml
+
+      - name: Commit and push to helm-charts
+        run: |
+          cd helm-charts
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          git add -A
+          git diff --staged --quiet || git commit -m "Release jobs-manager ${{ steps.version.outputs.version }}"
+          git push