Add GitHub Actions workflow to build and publish release zips

Author: BradleyMcGill

.github/workflows/release.yml

@@ -0,0 +1,82 @@
+name: Build and Release
+
+on:
+  push:
+    branches: [master]
+
+permissions:
+  contents: write
+
+jobs:
+  build:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - os: windows-latest
+            target: x86_64-pc-windows-msvc
+            ext: .exe
+          - os: ubuntu-latest
+            target: x86_64-unknown-linux-gnu
+            ext: ""
+          - os: ubuntu-latest
+            target: aarch64-unknown-linux-gnu
+            ext: ""
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          targets: ${{ matrix.target }}
+
+      - uses: Swatinem/rust-cache@v2
+        with:
+          workspaces: netmon
+
+      - name: Install cross-compilation tools
+        if: matrix.target == 'aarch64-unknown-linux-gnu'
+        run: sudo apt-get install -y gcc-aarch64-linux-gnu
+
+      - name: Build netmon
+        working-directory: netmon
+        env:
+          CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER: aarch64-linux-gnu-gcc
+        run: cargo build --release --target ${{ matrix.target }}
+
+      - name: Package (Windows)
+        if: matrix.os == 'windows-latest'
+        run: Compress-Archive -Path "netmon/target/${{ matrix.target }}/release/netmon.exe" -DestinationPath "netmon-${{ matrix.target }}.zip"
+
+      - name: Package (Linux)
+        if: matrix.os != 'windows-latest'
+        run: zip "netmon-${{ matrix.target }}.zip" "netmon/target/${{ matrix.target }}/release/netmon"
+
+      - uses: actions/upload-artifact@v4
+        with:
+          name: netmon-${{ matrix.target }}
+          path: netmon-${{ matrix.target }}.zip
+
+  release:
+    needs: build
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/download-artifact@v4
+        with:
+          path: artifacts
+          merge-multiple: true
+
+      - name: Publish latest release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          gh release delete latest --yes --cleanup-tag 2>/dev/null || true
+          gh release create latest artifacts/*.zip \
+            --prerelease \
+            --title "Latest Builds" \
+            --notes "Built from commit \`${{ github.sha }}\` on \`${{ github.ref_name }}\`."