Add build scripts for incremental and clean builds

- build.sh: incremental build with auto Data symlink creation
- rebuild.sh: clean rebuild (rm -rf build) for troubleshooting

Both scripts use all available CPU cores and ensure Data symlink exists
in bin directory for runtime asset access.

build.sh

@@ -0,0 +1,31 @@
+#!/bin/bash
+# Wowee Build Script - Ensures no stale binaries
+
+set -e  # Exit on error
+
+cd "$(dirname "$0")"
+
+echo "Building wowee..."
+
+# Create build directory if it doesn't exist
+mkdir -p build
+cd build
+
+# Configure with cmake
+echo "Configuring with CMake..."
+cmake .. -DCMAKE_BUILD_TYPE=Release
+
+# Build with all cores
+echo "Building with $(nproc) cores..."
+cmake --build . --parallel $(nproc)
+
+# Ensure Data symlink exists in bin directory
+cd bin
+if [ ! -e Data ]; then
+    ln -s ../../Data Data
+fi
+cd ..
+
+echo ""
+echo "Build complete! Binary: build/bin/wowee"
+echo "Run with: cd build/bin && ./wowee"