Create GitHub Action for automatic builds

.github/workflows/build.yml

@@ -0,0 +1,50 @@
+name: Build
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+        with:
+          submodules: recursive
+
+      - name: Determine Build Name
+        run: |
+          if [[ $GITHUB_REF == refs/tags/* ]]; then
+            # If triggered by a tag, use the tag name and strip a leading 'v' if present
+            VERSION="${GITHUB_REF_NAME}"
+          else
+            # If triggered by a commit/PR, use the 7-character short Git SHA
+            VERSION="${GITHUB_SHA::7}"
+          fi
+          # Save it to the GitHub environment so subsequent steps can use it
+          echo "BUILD_VERSION=$VERSION" >> $GITHUB_ENV
+          echo "Configured build version: $VERSION"
+
+      - name: Apply patches
+        run: ./patches/protonprep-valve-staging.sh
+
+      - name: Configure and Build
+        run: |
+          mkdir build && cd build
+          ../configure.sh --build-name=Proton-fox-${{ env.BUILD_VERSION }}
+          make redist
+
+      - name: Upload Artifacts
+        uses: actions/upload-artifact@v7
+        with:
+          name: proton-fox-${{ env.BUILD_VERSION }}
+          path: |
+            build/Proton-fox-${{ env.BUILD_VERSION }}.tar.gz
+            build/Proton-fox-${{ env.BUILD_VERSION }}.sha512sum