Add GitHub build

.github/workflows/build.yml

@@ -0,0 +1,22 @@
+name: Build
+run-name: "Build ${{ github.ref_name }} by ${{ github.actor }}"
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  build-pdf:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: typst-community/setup-typst@v3
+      - run: typst compile main.typ thesis.pdf
+      - run: typst compile presentation.typ
+      - name: Upload PDF file
+        uses: actions/upload-artifact@v4
+        with:
+          name: PDFs
+          path: "*.pdf"