[SPCA] Integrate auto-upload

.github/workflows/upload-spca.yml

@@ -0,0 +1,17 @@
+name: Upload SPCA Summary
+on:
+  push:
+    paths:
+      - 'semester3/spca/**'
+jobs:
+  upload_document:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set up Git repository
+        uses: actions/checkout@v6
+      - name: Upload to ComSol
+        uses: ./.github/actions/upload-to-comsol
+        with:
+          file: ./semester3/spca/spca-summary.pdf
+          access_token: ${{ secrets.TOKEN_SPCA }}
+          url: https://exams.vis.ethz.ch/api/document/jahutz/summary-hs25_1/files/691/update/