Added check for new lines at the end of files in GitHub Actions (#38)

.github/workflows/cmake.yml

@@ -27,6 +27,11 @@ jobs:
           fetch-depth: 0
           fetch-tags: true
 
+      - name: Check for new lines at the end of files
+        # https://medium.com/@alexey.inkin/how-to-force-newline-at-end-of-files-and-why-you-should-do-it-fdf76d1d090e
+        working-directory: ${{github.workspace}}/src
+        run: find . -not -path "./.git/*" -type f | xargs -L1 bash -c 'test -z "$(tail -c1 "$0")" || (echo "No newline at the end of $0" ; false)'
+
       - name: Check formatting with git diff --check
         working-directory: ${{github.workspace}}/src
         run: git diff --check --color HEAD~