feat: add release workflow

.github/workflows/release.yml

@@ -0,0 +1,87 @@
+name: "Release TapToQR"
+
+on:
+  workflow_dispatch:
+    inputs:
+      release-type:
+        type: choice
+        description: Which type of release to create?
+        required: true
+        default: patch
+        options:
+          - patch
+          - minor
+          - major
+
+concurrency:
+  group: ${{ github.workflow }}
+  cancel-in-progress: false
+
+jobs:
+  # Get the Current Version and Bump it depending on the release-type input
+  update-version:
+    runs-on: ubuntu-latest
+    permissions: write-all
+    outputs:
+      new_version: ${{ steps.bump_version.outputs.new_version }}
+    steps:
+      - name: Ensure branch is main
+        if: github.ref != 'refs/heads/main'
+        run: |
+          text="Publish a new version can only be done from the main branch."
+          echo "::error title=Wrong Branch::$text"
+          exit 1
+
+      - name: Read current version
+        run: |
+          echo "Current version: ${{ vars.VERSION }}"
+
+      - name: Bump version
+        id: bump_version
+        run: |
+          # Retrieve the increment type from the GitHub Actions input
+          increment="${{ inputs.release-type }}"
+          
+          # Split the VERSION variable into its major, minor, and patch components
+          IFS='.' read -r -a parts <<< "${{ vars.VERSION }}"
+          
+          # Check if the VERSION variable was split correctly
+          if [ "${#parts[@]}" -ne 3 ]; then
+          echo "Invalid version format"
+          exit 1
+          fi
+          
+          major=${parts[0]}
+          minor=${parts[1]}
+          patch=${parts[2]}
+          
+          # Increment the appropriate version component
+          if [ "$increment" = "major" ]; then
+          major=$((major + 1))
+          minor=0
+          patch=0
+          elif [ "$increment" = "minor" ]; then
+          minor=$((minor + 1))
+          patch=0
+          elif [ "$increment" = "patch" ]; then
+          patch=$((patch + 1))
+          else
+          echo "Invalid increment type"
+          exit 1
+          fi
+          
+          # Construct the new version string
+          new_version="$major.$minor.$patch"
+          
+          # Output the new version
+          echo "New version: $new_version"
+          
+          # Set the output variable for GitHub Actions
+          echo "new_version=$new_version" >> $GITHUB_OUTPUT
+
+      - name: Update version var
+        id: write_version
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          gh variable set VERSION --body "${{ steps.bump_version.outputs.new_version }}"