chore: add artifact upload workflow

Author: benja2998

.forgejo/workflows/artifacts.yml

@@ -0,0 +1,36 @@
+# This workflow will upload binaries as release artifacts to Codeberg Actions.
+# Please note that only Linux binaries are uploaded. For Windows, please visit:
+# https://multitoolplusplus.codeberg.page/wiki/wiki/installing-dependencies.html#windows
+# https://multitoolplusplus.codeberg.page/wiki/wiki/building-multitool-with-cmake.html
+
+# For macOS, please visit:
+# https://codeberg.org/multitoolplusplus/app/fork # you're on your own
+
+name: Upload binaries as release artifacts
+
+on:
+  release:
+    types: [published]
+jobs:
+  build:
+    runs-on: codeberg-tiny # Codeberg only has this runner, which runs Ubuntu.
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v2
+
+    - name: Build with CMake
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y cmake curl build-essential gcc
+        mkdir -p build # In case it somehow exists already
+        cd build
+        cmake ..
+        cmake --build .
+        cd .. # Go back to repository root, to prevent the next step failing
+
+    - name: Upload binaries as action artifacts
+      uses: actions/upload-artifact@v4
+      with:
+        name: pre-compiled binaries
+        path: build