Add start-gpu.sh script for GPU-enabled FastAPI deployment

- Create GPU-specific startup script
- Set environment variables for GPU and project configuration
- Use uv to install GPU extras and run FastAPI server

start-gpu.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+# Get project root directory
+PROJECT_ROOT=$(pwd)
+
+# Set environment variables
+export USE_GPU=true
+export USE_ONNX=false
+export PYTHONPATH=$PROJECT_ROOT:$PROJECT_ROOT/api
+export MODEL_DIR=src/models
+export VOICES_DIR=src/voices/v1_0
+export WEB_PLAYER_PATH=$PROJECT_ROOT/web
+
+# Run FastAPI with GPU extras using uv run
+uv pip install -e ".[gpu]"
+uv run --no-sync uvicorn api.src.main:app --host 0.0.0.0 --port 50888