Launch a new process with specified command and options. Supports background execution, timeout control, and environment variable configuration.

Basic usage - launch and wait for completion:
/launch-process:--wait --timeout=30
```bash
echo "Hello World"
ls -la
```

Launch in background:
/launch-process:
```bash
npm run dev
```

Launch with custom working directory:
/launch-process:--working-dir=/tmp --wait
```bash
pwd
ls -la
```

Launch with environment variables:
/launch-process:--env=NODE_ENV=development --env=PORT=3000 --wait
```bash
echo "NODE_ENV: $NODE_ENV"
echo "PORT: $PORT"
```

Launch with timeout and show in terminal:
/launch-process:--wait --timeout=60 --show-terminal
```bash
./gradlew build
```

The command returns a process ID that can be used with other process management commands like list-processes, kill-process, read-process-output, and write-process-input.