configure git for not converting end-of-line characters

this is especially needed when running under windows as our ci does

.github/workflows/build.yml

@@ -5,6 +5,8 @@ jobs:
     name: Build
     runs-on: windows-2019
     steps:
+      - name: Configure git
+        run: git config --global core.autocrlf false
       - uses: actions/checkout@v2
         with:
           fetch-depth: 0