Add Release workflow

.github/workflows/pre-release.yml

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+name: SmallRye Pre Release
+
+on:
+  pull_request:
+    paths:
+      - '.github/project.yml'
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    name: pre release
+
+    steps:
+      - uses: radcortez/project-metadata-action@main
+        name: retrieve project metadata
+        id: metadata
+        with:
+          github-token: ${{secrets.GITHUB_TOKEN}}
+          metadata-file-path: '.github/project.yml'
+
+      - name: Validate version
+        if: contains(steps.metadata.outputs.current-version, 'SNAPSHOT')
+        run: |
+          echo '::error::Cannot release a SNAPSHOT version.'
+          exit 1
+
+      - uses: radcortez/milestone-review-action@main
+        name: milestone review
+        with:
+          github-token: ${{secrets.GITHUB_TOKEN}}
+          milestone-title: ${{steps.metadata.outputs.current-version}}

.github/workflows/release-perform.yml

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+name: SmallRye Release
+run-name: Perform ${{github.event.inputs.tag || github.ref_name}} Release
+on:
+  push:
+    tags:
+      - '*'
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: 'Tag to release'
+        required: true
+
+permissions:
+  attestations: write
+  id-token: write
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  perform-release:
+    name: Perform Release
+    uses: smallrye/.github/.github/workflows/perform-release.yml@main
+    secrets: inherit
+    with:
+      version: ${{github.event.inputs.tag || github.ref_name}}

.github/workflows/release-prepare.yml

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+name: SmallRye Prepare Release
+
+on:
+  pull_request:
+    types: [ closed ]
+    paths:
+      - '.github/project.yml'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  prepare-release:
+    name: Prepare Release
+    if: ${{ github.event.pull_request.merged == true}}
+    uses: smallrye/.github/.github/workflows/prepare-release.yml@main
+    secrets: inherit

.github/workflows/update-milestone.yml

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+name: Update Milestone
+
+on:
+  pull_request_target:
+    types: [closed]
+
+jobs:
+  update:
+    runs-on: ubuntu-latest
+    name: update-milestone
+    if: ${{github.event.pull_request.merged == true}}
+
+    steps:
+      - uses: radcortez/milestone-set-action@main
+        name: milestone set
+        with:
+          github-token: ${{secrets.GITHUB_TOKEN}}