feat(workflow): Add build workflow

.gitea/build.yaml

@@ -0,0 +1,20 @@
+name: Build document
+run-name: Build from ${{ gitea.actor }} 🚀
+on: [push]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Compile LaTeX document
+      uses: dante-ev/latex-action@latest
+      with:
+        root_file: ProgettareSistemi.tex
+
+    - name: Upload artifact
+      uses: actions/upload-artifact@v3
+      with:
+        name: ProgettareSistemi.pdf
+        path: ./ProgettareSistemi.pdf