Add yarn packages

.github/workflows/yarn.yml

@@ -0,0 +1,44 @@
+name: Yarn
+on:
+  workflow_call:
+    secrets:
+      NPM_AUTH_TOKEN:
+        required: true
+    inputs:
+      yarn-output:
+        type: string
+        required: true
+
+jobs:
+  yarn-install:
+    name: Install Yarn dependencies
+    runs-on: ubuntu-latest
+    container: node:lts-alpine
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set Node.js 20.x
+        uses: actions/setup-node@v3
+        with:
+          node-version: 20.x
+      - name: Set Yarn authentication
+        run: |
+          yarn config set npmScopes.paltiverse.npmRegistryServer https://gitea.palk.me/api/packages/paltiverse/npm/
+          yarn config set npmScopes.paltiverse.npmAlwaysAuth true
+          yarn config set npmScopes.paltiverse.npmAuthToken $NPM_AUTH_TOKEN
+        env:
+          NPM_AUTH_TOKEN: ${{ secrets.NPM_AUTH_TOKEN }}
+      - name: Install dependencies
+        uses: borales/actions-yarn@v4
+        with:
+          cmd: install
+
+      - name: Build app using CI script
+        uses: borales/actions-yarn@v4
+        with:
+          cmd: gitea-ci-script
+
+      - name: Archive Yarn build artifacts
+        uses: actions/upload-artifact@v3
+        with:
+          name: built-app
+          path: ${{ inputs.yarn-output }}