added gitea action

.gitea/workflows/build-pdf.yaml

@@ -0,0 +1,45 @@
+name: Build Typst PDF
+run-name: Build PDF for ${{ gitea.actor }} on master
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v3
+
+      - name: Install FiraCode Nerd Font
+        run: |
+          mkdir -p fonts
+          wget -qO FiraCode.zip https://github.com/ryanoasis/nerd-fonts/releases/latest/download/FiraCode.zip
+          unzip -q FiraCode.zip -d fonts
+
+      - name: Install Typst CLI
+        run: |
+          # Download the latest CLI binary for Linux
+          wget -qO- https://github.com/typst/typst/releases/latest/download/typst-x86_64-unknown-linux-musl.tar.xz | tar -xJ
+          
+          # Move binary to path (assuming standard Linux runner)
+          mv typst-x86_64-unknown-linux-musl/typst /usr/local/bin/typst
+          chmod +x /usr/local/bin/typst
+
+      - name: Run Build Script
+        # We set the Environment Variable TYPST_FONT_PATHS so Typst knows where to look
+        env:
+          TYPST_FONT_PATHS: ./fonts
+        run: |
+          chmod +x build.sh
+          ./build.sh
+
+      - name: Upload Artifacts
+        uses: actions/upload-artifact@v3
+        with:
+          name: mathe-merkblaetter
+          # Your script outputs to the ./build directory
+          path: build/*.pdf
+          if-no-files-found: error