Add workflow

.github/workflows/build.yaml

@@ -0,0 +1,24 @@
+# This defines the name of the workflow as it will appear in the "Actions" tab of the GitHub repository.
+name: 'Link Checker: All English'
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+  pull_request:
+
+permissions:
+  contents: read
+  pull-requests: read
+
+# The `jobs` key groups together all the jobs that run in the workflow file.
+jobs:
+  package:
+    name: "Package as Thunderstore ZIP"
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Run Packager
+        run: ./build.sh