Add workflow for registring package

.github/workflows/register-package.yaml

@@ -0,0 +1,48 @@
+name: Register package to GCP Artifact Registry
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+
+jobs:
+  register:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Setup Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.11
+
+      - name: Install dependencies
+        run: |
+          pip install --upgrade pip
+          pip install build twine keyring keyrings.google-artifactregistry-auth
+
+      - name: Build Python package
+        run: |
+          python -m build
+
+      - name: Create .pypirc file
+        run: |
+          echo "[distutils]
+          index-servers =
+              ${{ secrets.REPOSITORY }}
+
+          [${{ secrets.REPOSITORY }}]
+          repository: https://${{ secrets.LOCATION }}-python.pkg.dev/${{ secrets.PROJECT_ID }}/${{ secrets.REPOSITORY }}/
+          username: _json_key_base64
+          password: ${{ secrets.GCP_SA_KEY_BASE64 }}" > ~/.pypirc
+
+      - name: Register package
+        run: |
+          twine upload -r ${{ secrets.REPOSITORY }} dist/*
+        env:
+          REPOSITORY: ${{ secrets.REPOSITORY }}
+          LOCATION: ${{ secrets.LOCATION }}
+          PROJECT_ID: ${{ secrets.PROJECT_ID }}
+          GCP_SA_KEY_BASE64: ${{ secrets.GCP_SA_KEY_BASE64 }}