Add CI build and artifacts push

Author: aobolensk

Diff for: .github/workflows/build.yml

@@ -0,0 +1,20 @@
+name: Build
+
+on: [push, pull_request]
+
+jobs:
+  macos-build:
+    runs-on: macos-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Setup environment
+      run: |
+        brew install Pygments
+        brew install --cask mactex
+    - name: Build
+      run: |
+        pdflatex *.tex
+    - uses: actions/upload-artifact@v4
+      with:
+        name: pdf
+        path: '*.pdf'