Add release workflow

.github/workflows/release.yml

@@ -0,0 +1,119 @@
+name: release-relayer
+
+on:
+  workflow_dispatch:
+    inputs:
+      runtime_version:
+        type: string
+        description: Latest runtime version compatible with
+      snowbridge_version:
+        type: string
+        description: Linked snowbridge version
+
+jobs:
+  release-relayer:
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          submodules: 'true'
+          fetch-tags: 'true'
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v2
+        with:
+          node-version: "14"
+
+      - name: Setup go
+        uses: actions/checkout@v4
+        with:
+          go-version: "^1.21.0"
+
+      - name: Install Go tools
+        run: >
+          go install github.com/magefile/mage@v1.15.0 && 
+          go install github.com/ferranbt/fastssz/sszgen@v0.1.3 &&
+          go install github.com/ethereum/go-ethereum/cmd/abigen@v1.14.8
+
+      - name: Install Foundry
+        uses: foundry-rs/foundry-toolchain@v1
+
+      - name: Install dependencies
+        run: go mod download
+
+      - name: Add gopath to bin
+        run: echo "$HOME/go/bin" >> $GITHUB_PATH
+
+      - name: Build
+        run: CGO_ENABLED=1 GOOS=linux GOARCH=amd64 mage build
+
+      - name: Configure Git
+        run: |
+          git config --global user.name 'github-actions'
+          git config --global user.email 'github-actions@github.com'
+
+      - name: Determine new version
+        id: new_version
+        run: |
+          # Get the most recent tag in the format relayer-v<version>
+          current_tag=$(git tag --list "relayer-v*" --sort=-v:refname | head -n 1)
+          new_tag="relayer-v${{ inputs.snowbridge_version }}-${{ inputs.runtime_version }}"
+
+          echo "Old tag: $current_tag"
+          echo "New tag: $new_tag"
+          echo "new_tag=$new_tag" >> $GITHUB_OUTPUT
+          echo "from_tag=$current_tag" >> $GITHUB_OUTPUT
+
+      - name: Create new tag
+        id: create_tag
+        run: |
+          tag_name="${{ steps.new_version.outputs.new_tag }}"
+          echo "Tag name: $tag_name"
+          echo "tag=$tag_name" >> $GITHUB_OUTPUT
+          git tag $tag_name
+
+      - name: Push new tag
+        run: |
+          git push origin --tags
+
+      - name: "Build Changelog"
+        id: build_changelog
+        uses: mikepenz/release-changelog-builder-action@v4
+        with:
+          configurationJson: |
+            {
+              "template": "#{{CHANGELOG}}",
+              "categories": [
+                {
+                    "title": "## Relayer Changes",
+                    "labels": []
+                }
+              ]
+            }
+          fromTag: ${{ steps.new_version.outputs.from_tag }}
+          toTag: ${{ steps.create_tag.outputs.tag }}
+
+      - name: Create a GitHub Release
+        id: create_release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ steps.create_tag.outputs.tag }}
+          release_name: ${{ steps.create_tag.outputs.tag }}
+          body: |
+            ${{steps.build_changelog.outputs.changelog}}
+          draft: true
+          prerelease: false
+
+      - name: Upload Release Asset
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: ./build/tanssi-bridge-relayer
+          asset_name: tanssi-bridge-relayer
+          asset_content_type: application/octet-stream