Add GitHub Actions workflow for automated releases and build script

.github/workflows/release.yml

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+name: Release
+
+on:
+  push:
+    tags:
+      - "v*"
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Set up Go
+        uses: actions/setup-go@v4
+        with:
+          go-version: "1.23.5"
+
+      - name: Run build script
+        run: ./scripts/build.sh
+
+      - name: Upload binaries
+        uses: actions/upload-artifact@v3
+        with:
+          name: binaries
+          path: bin/
+
+      - name: Create GitHub Release
+        uses: softprops/action-gh-release@v1
+        with:
+          files: |
+            bin/printlayout-linux-amd64
+            bin/printlayout-darwin-amd64
+            bin/printlayout-windows-amd64.exe

.gitignore

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+bin/

scripts/build.sh

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+#!/bin/bash
+
+OUTPUT_DIR="bin"
+mkdir -p $OUTPUT_DIR
+
+PLATFORMS=(
+  "windows/amd64"
+  "linux/amd64"
+  "darwin/amd64"
+)
+
+for PLATFORM in "${PLATFORMS[@]}"; do
+  OS=$(echo $PLATFORM | cut -d'/' -f1)
+  ARCH=$(echo $PLATFORM | cut -d'/' -f2)
+  OUTPUT_NAME="printlayout-$OS-$ARCH"
+
+  if [ "$OS" = "windows" ]; then
+    OUTPUT_NAME="$OUTPUT_NAME.exe"
+  fi
+
+  echo "Building for $OS/$ARCH..."
+  env GOOS=$OS GOARCH=$ARCH go build -o "$OUTPUT_DIR/$OUTPUT_NAME" ./cmd/main.go
+done
+
+echo "Binaries built successfully in the $OUTPUT_DIR directory."