fix workflow and add release uploading

.github/workflows/latex.yml

@@ -25,4 +25,15 @@ jobs:
           # The working directory for the latex compiler to be invoked
           working_directory: latex
           # LaTeX engine to be used
-          compiler: luatex
+          compiler: lualatex
+
+      - name: Upload Release Asset
+        id: upload-release-asset
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }} # This pulls from the CREATE RELEASE step above, referencing it's ID to get its outputs object, which include a `upload_url`. See this blog post for more info: https://jasonet.co/posts/new-features-of-github-actions/#passing-data-to-future-steps
+          asset_path: ./latex/document.pdf
+          asset_name: thesis.pdf
+          asset_content_type: application/pdf