Add dev release workflow

.github/README.md

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+# CI/CD Workflows for Gloo Portal IDP Connect
+
+This repository contains several GitHub Actions workflows to manage the continuous integration, development releases, and production releases of the Gloo Portal IDP Connect project.
+
+## Workflows
+
+### 1. `gloo-portal-idp-connect CI`
+
+File: `ci-pr.yml`
+
+This workflow is triggered on any push or pull request to the `main` branch, excluding changes to `.ci/` and markdown files.
+
+**Jobs:**
+- **style-check**: Runs Go style checks using `golangci-lint`.
+- **go-unit-test**: Executes unit tests for the Go codebase after the style check passes.
+
+This workflow ensures that code quality and correctness are maintained in the `main` branch by enforcing linting and running unit tests.
+
+### 2. `Release`
+
+File: `ci-release.yml`
+
+This workflow is triggered when a release is published on GitHub.
+
+**Jobs:**
+- **style-check**: Runs Go style checks using `golangci-lint`.
+- **docker-release**: Publishes a Docker image tagged with the release version.
+- **release-helm**: Publishes the `gloo-portal-idp-connect` Helm chart using the release version.
+
+This workflow automates the production release process, ensuring that the Docker image and Helm chart are built and published whenever a release is created.
+
+### 3. `Dev Release`
+
+File: `ci-release-dev.yaml`
+
+This workflow is manually triggered through the GitHub Actions UI (`workflow_dispatch`).
+
+**Jobs:**
+- **set-version**: Generates a version based on the current branch and commit hash. Naming convention: `dev-$BRANCH-$HASH`.
+- **docker-release**: Publishes a Docker image tagged with the generated dev version.
+- **release-helm**: Publishes the `gloo-portal-idp-connect` Helm chart tagged with the dev version.
+
+This workflow helps during development, by allowing us to build and publish dev images as-needed, instead of needing to do a release or manual creation.
+The only caveat is that it is published alongside the release images, and don't automatically get cleaned up.
+
+## Future Improvements
+
+- **Automated Cleanup**: We should add scheduled workflows or something to automatically clean up old dev released images and Helm charts to manage storage and maintain a clean registry.
+  - This could be as easy as having a weekly workflow that removes anything with the `dev-` prefix that is older than a certain date for images and charts.
+- **Updated repositories**: Currently the repositories where we publish reference `gloo-mesh`, but should be updated to `gloo-ee` as this is part of the Gloo Gateway product.
+- **D.R.Y.**: There is some duplication in the release workflows (dev + official) that could be refactored into a shared workflow to reduce maintenance overhead. Similar to how the CI workflows run in our [solo-io/solo-projects](https://github.com/solo-io/solo-projects/tree/4efea67fb02f573d2f3d7fcfdf584e7c55e752f6/.github/workflows) repo.

.github/workflows/ci-release-dev.yaml

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+name: Dev Release
+run-name: Dev release for branch ${{ github.ref_name }}
+
+on:
+  workflow_dispatch:
+
+jobs:
+  set-version: # Get version as first job to re-use the value without needing to re-calculate it.
+    name: Set Version for Dev Release
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    outputs:
+      version: ${{ steps.set_version.outputs.version }}
+    steps:
+      - uses: actions/checkout@v4
+      - id: set_version
+        run: |
+          BRANCH=$(echo $(git rev-parse --abbrev-ref HEAD) | tr -d '0123456789/.')
+          VERSION=dev-$BRANCH-$(git rev-parse --short HEAD)
+          echo "version=$VERSION" >> $GITHUB_OUTPUT
+          echo "Set version to $VERSION"
+  docker-release:
+    runs-on: ubuntu-latest
+    needs: [set-version]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Gcloud Login
+        uses: google-github-actions/setup-gcloud@a48b55b3b0eeaf77b6e1384aab737fbefe2085ac
+        with:
+          version: '386.0.0'
+          project_id: gloo-mesh
+          service_account_key: ${{ secrets.ARTIFACT_PUSHER_JSON_KEY }}
+          export_default_credentials: true
+      - name: Publish Docker image
+        env:
+          TAGGED_VERSION: ${{ needs.set-version.outputs.version }}
+          PROJECT: gloo-mesh
+        run: |
+          make docker-release
+  release-helm:
+    name: Release gloo-portal-idp-connect helm chart
+    needs: [set-version]
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Cancel Previous Runs
+        uses: styfle/[email protected]
+        with:
+          access_token: ${{ github.token }}
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Gcloud Login
+        uses: google-github-actions/setup-gcloud@a48b55b3b0eeaf77b6e1384aab737fbefe2085ac
+        with:
+          version: '386.0.0'
+          project_id: gloo-mesh
+          service_account_key: ${{ secrets.GLOO_RELEASE_ADMIN }}
+          export_default_credentials: true
+      - name: Publish Helm
+        env:
+          TAGGED_VERSION: ${{ needs.set-version.outputs.version }}
+        run: |
+          make publish-chart