Add build scripts and Windows icon/resources

Added:
- build_dev.bat / build_dev.sh - Development build scripts
- build_release.bat / build_release.sh - Release build scripts with embedding
- icon.ico - Default Windows icon for executable
- resources.rc - Windows resource file for icon and exe metadata
- BUILD_SCRIPTS.md - Complete documentation for build scripts

Features:
- Automated development builds (no embedding, fast iteration)
- Automated release builds (with Lua and asset embedding)
- Interactive verification and cleanup
- Custom icon and version info in Windows executables
- Cross-platform scripts (Windows .bat and Unix .sh)
- Safety checks and helpful messages

The build scripts provide one-command building for both development
and release workflows, with clear instructions and progress feedback.

build_release.sh

@@ -0,0 +1,150 @@
+#!/bin/bash
+# ReiLua Release Build Script
+# Run this from w64devkit shell
+
+echo "================================"
+echo "ReiLua - Release Build"
+echo "================================"
+echo ""
+
+# Check if we're in the right directory
+if [ ! -f "CMakeLists.txt" ]; then
+    echo "ERROR: Please run this script from the ReiLua root directory"
+    exit 1
+fi
+
+# Navigate to build directory
+cd build || exit 1
+
+# Clean old embedded files
+echo "Cleaning old embedded files..."
+rm -f embedded_main.h embedded_assets.h
+
+# Check for Lua files
+echo ""
+echo "Checking for Lua files..."
+LUA_FILES=$(ls *.lua 2>/dev/null | wc -l)
+
+if [ "$LUA_FILES" -eq 0 ]; then
+    echo ""
+    echo "WARNING: No Lua files found in build directory!"
+    echo ""
+    echo "Please copy your Lua files:"
+    echo "  cd build"
+    echo "  cp ../your_game/*.lua ."
+    echo ""
+    read -p "Do you want to continue anyway? (y/N): " -n 1 -r
+    echo ""
+    if [[ ! $REPLY =~ ^[Yy]$ ]]; then
+        exit 1
+    fi
+else
+    echo "Found $LUA_FILES Lua file(s):"
+    ls -1 *.lua
+fi
+
+# Check for assets folder
+echo ""
+echo "Checking for assets..."
+if [ ! -d "assets" ]; then
+    echo ""
+    echo "WARNING: No assets folder found!"
+    echo ""
+    echo "To embed assets, create the folder and copy files:"
+    echo "  cd build"
+    echo "  mkdir assets"
+    echo "  cp ../your_game/assets/* assets/"
+    echo ""
+    read -p "Do you want to continue without assets? (y/N): " -n 1 -r
+    echo ""
+    if [[ ! $REPLY =~ ^[Yy]$ ]]; then
+        exit 1
+    fi
+    EMBED_ASSETS="OFF"
+else
+    ASSET_FILES=$(find assets -type f 2>/dev/null | wc -l)
+    echo "Found $ASSET_FILES asset file(s) in assets folder"
+    EMBED_ASSETS="ON"
+fi
+
+echo ""
+echo "================================"
+echo "Build Configuration"
+echo "================================"
+echo "Lua Embedding:    ON"
+echo "Asset Embedding:  $EMBED_ASSETS"
+echo "Build Type:       Release"
+echo "================================"
+echo ""
+read -p "Press Enter to continue or Ctrl+C to cancel..."
+
+# Clean CMake cache to ensure fresh configuration
+echo ""
+echo "Cleaning CMake cache..."
+rm -rf CMakeCache.txt CMakeFiles/
+
+# Configure with embedding enabled
+echo ""
+echo "Configuring CMake for release..."
+cmake -G "MinGW Makefiles" .. -DEMBED_MAIN=ON -DEMBED_ASSETS=$EMBED_ASSETS -DCMAKE_BUILD_TYPE=Release
+
+if [ $? -ne 0 ]; then
+    echo ""
+    echo "ERROR: CMake configuration failed!"
+    exit 1
+fi
+
+# Build
+echo ""
+echo "Building ReiLua Release..."
+make
+
+if [ $? -ne 0 ]; then
+    echo ""
+    echo "ERROR: Build failed!"
+    exit 1
+fi
+
+# Show embedded file info
+echo ""
+echo "================================"
+echo "Embedded Files Summary"
+echo "================================"
+
+if [ -f "embedded_main.h" ]; then
+    echo ""
+    echo "Embedded Lua files:"
+    grep 'Embedded file:' embedded_main.h | sed 's/.*Embedded file: /  - /'
+else
+    echo "No Lua files embedded"
+fi
+
+if [ -f "embedded_assets.h" ]; then
+    echo ""
+    echo "Embedded assets:"
+    grep 'Embedded asset:' embedded_assets.h | sed 's/.*Embedded asset: /  - /' | sed 's/ (.*//'
+else
+    echo "No assets embedded"
+fi
+
+# Get executable size
+echo ""
+echo "================================"
+echo "Build Complete!"
+echo "================================"
+EXESIZE=$(du -h ReiLua.exe | cut -f1)
+echo ""
+echo "Executable: ReiLua.exe ($EXESIZE)"
+echo "Location:   $(pwd)/ReiLua.exe"
+echo ""
+echo "Your game is ready for distribution!"
+echo ""
+echo "To test the release build:"
+echo "  ./ReiLua.exe --log  (with console)"
+echo "  ./ReiLua.exe        (production mode)"
+echo ""
+echo "To distribute:"
+echo "  - Copy ReiLua.exe to your distribution folder"
+echo "  - Rename it to your game name (optional)"
+echo "  - That's it! Single file distribution!"
+echo ""