Add github workflow for toolchain consistency check

Implements #308

Author: dario23

.github/workflows/style.yml

@@ -38,3 +38,12 @@ jobs:
           if rustup component add clippy rustc-dev; then
               cargo clippy --all
           fi
+
+  version_consistency_check:
+    name: Toolchain version consistency check
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Toolchain version consistency check
+        run: scripts/toolchain-version -c
+