Add basic runthrough test workflow

.gitea/workflows/dummy.yaml

@@ -0,0 +1,28 @@
+name: Dummy workflow to run everything once. No further testing.
+on: [push]
+
+jobs:
+  build:
+    runs-on: archlinux
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v2
+
+    - name: Prepare system
+      run: |
+        pacman --noconfirm -Syyu
+        pacman --noconfirm -S neovim python-neovim git bash
+
+    - name: Position repository
+      run: |
+        cd ..
+        mkdir -p ~/.config
+        mv nvim ~/.config/nvim
+        cd ~/.config/nvim
+        chmod +x setup_nvim.sh
+        ./setup_nvim.sh
+
+    - name: Run neovim in quiet mode
+      run: |
+        nvim -es