Adding asset upload

Basic build seems to work (?), but adding upload of the resulting pdf.

Author: wenegrat

.github/workflows/main.yml

@@ -10,3 +10,14 @@ jobs:
         uses: dante-ev/latex-action@latest
         with:
           root_file: WenegratGroupExpectations.tex
+        
+      - 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 }} 
+          asset_path: ./WenegratGroupExpectations.pdf
+          asset_name: WenegratGroupExpectations.pdf
+          asset_content_type: pdf