Add neovim setup to action

Author: erichlf

.github/workflows/default.yml

@@ -14,6 +14,11 @@ jobs:
           imageName: ${{ env.IMAGE_NAME }}
           cacheFrom: ${{ env.IMAGE_NAME }}
           push: never
+      - name: Setup NeoVim
+        uses: rhysd/action-setup-vim@v1
+        with:
+          neovim: true
+          version: v0.9.0
       - name: Run tests inside the docker image
         uses: devcontainers/[email protected]
         with: