feat: Simplify configuration with run_gemini scripts

- Added run_gemini.sh for macOS/Linux
- Added run_gemini.bat for Windows
- Scripts handle virtual environment activation automatically
- Updated README and config examples to use the simpler command
- No need to specify Python path or script arguments anymore

This makes the setup much cleaner and less error-prone for users.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

run_gemini.sh

@@ -1,4 +1,8 @@
 #!/bin/bash
-cd "$(dirname "$0")"
-source venv/bin/activate
-python gemini_server.py "$@"
+
+# Get the directory where this script is located
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+
+# Activate the virtual environment and run the server
+source "$SCRIPT_DIR/venv/bin/activate"
+python "$SCRIPT_DIR/gemini_server.py"