feat: Update README and add new composite actions

- Updated README.md to remove references to reusable workflows and added links to the new composite actions.
- Added auto-merge-action for auto-approving and merging PRs from trusted sources.
- Added cleanup-ghcr-action for cleaning up old GitHub Container Registry packages.
- Added dockerfile-lint-action for linting Dockerfiles using Hadolint.
- Added dotnet-test-action for testing .NET solutions with coverage reporting.
- Added flux-gitops-deploy-action for deploying Kubernetes manifests using Flux.
- Added install-cilium-action for installing Cilium as the CNI in Kubernetes.
- Added install-flux-action for installing Flux in a Kubernetes cluster.
- Added setup-ksail-action for installing the KSail CLI via Homebrew.
- Added sync-labels-action for syncing GitHub labels across repositories.
- Added todos-action for creating GitHub issues from TODO comments in the code.
- Added zizmor-action for running security analysis on GitHub Actions workflows.

Signed-off-by: Nikolai Emil Damm <[email protected]>

Author: devantler

.github/workflows/active-release.yaml

@@ -10,6 +10,6 @@ permissions: {}
 
 jobs:
   release:
-    uses: ./.github/workflows/reusable-workflow-release.yaml
+    uses: devantler-tech/reusable-workflows/.github/workflows/reusable-workflow-release.yaml@
     secrets:
       APP_PRIVATE_KEY: ${{ secrets.APP_PRIVATE_KEY }}