Add CuteDSP WebAssembly demo and server script

- Created a new HTML file for the CuteDSP WebAssembly demo, featuring various DSP functionalities including FFT, STFT, filters, and more.
- Implemented a responsive design with interactive controls for real-time audio processing.
- Added a shell script to serve the demo locally using Python's HTTP server.

Author: LogicCuteGuy

build_web_example.sh

@@ -0,0 +1,100 @@
+#!/bin/bash
+
+# CuteDSP WebAssembly Build Script
+# Builds and prepares the web example with fresh WASM binaries
+
+set -e  # Exit on any error
+
+echo "🎵 CuteDSP WebAssembly Builder"
+echo "================================"
+
+# Colors for output
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+BLUE='\033[0;34m'
+NC='\033[0m' # No Color
+
+# Function to print colored output
+print_status() {
+    echo -e "${BLUE}[INFO]${NC} $1"
+}
+
+print_success() {
+    echo -e "${GREEN}[SUCCESS]${NC} $1"
+}
+
+print_warning() {
+    echo -e "${YELLOW}[WARNING]${NC} $1"
+}
+
+print_error() {
+    echo -e "${RED}[ERROR]${NC} $1"
+}
+
+# Check if we're in the right directory
+if [ ! -f "Cargo.toml" ]; then
+    print_error "Cargo.toml not found. Please run this script from the project root."
+    exit 1
+fi
+
+print_status "Checking Rust toolchain..."
+if ! command -v rustc &> /dev/null; then
+    print_error "Rust is not installed. Please install Rust from https://rustup.rs/"
+    exit 1
+fi
+
+print_status "Checking wasm-pack..."
+if ! command -v wasm-pack &> /dev/null; then
+    print_error "wasm-pack is not installed. Install with: cargo install wasm-pack"
+    exit 1
+fi
+
+print_status "Building WebAssembly package..."
+cd "$(dirname "$0")"  # Go to script directory (project root)
+
+# Clean previous build
+if [ -d "web_example/pkg" ]; then
+    print_status "Cleaning previous build..."
+    rm -rf web_example/pkg
+fi
+
+# Build WASM with optimizations
+print_status "Compiling Rust to WebAssembly..."
+wasm-pack build --target no-modules --out-dir web_example/pkg --features wasm
+
+if [ $? -ne 0 ]; then
+    print_error "WASM build failed!"
+    exit 1
+fi
+
+print_success "WebAssembly build completed!"
+
+# Verify the build
+if [ ! -f "web_example/pkg/cute_dsp_bg.wasm" ]; then
+    print_error "WASM file not found after build!"
+    exit 1
+fi
+
+WASM_SIZE=$(stat -c%s "web_example/pkg/cute_dsp_bg.wasm" 2>/dev/null || stat -f%z "web_example/pkg/cute_dsp_bg.wasm" 2>/dev/null || echo "unknown")
+print_success "WASM binary size: ${WASM_SIZE} bytes"
+
+# Copy additional assets if needed
+print_status "Preparing web assets..."
+
+# Make sure the serve script is executable
+chmod +x web_example/serve.sh
+
+print_success "Build completed successfully!"
+echo ""
+echo "🎯 Next steps:"
+echo "  cd web_example"
+echo "  ./serve.sh"
+echo "  Open http://localhost:8080 in your browser"
+echo ""
+echo "📁 Build artifacts:"
+echo "  • web_example/pkg/cute_dsp.js"
+echo "  • web_example/pkg/cute_dsp_bg.wasm"
+echo "  • web_example/index.html"
+echo ""
+print_success "Ready to serve! 🚀"