Feature Request: Parallel Execution of MCP Tool Calls in Q CLI

### Checks

- [x] I have searched [github.com/aws/amazon-q-developer-cli/issues](https://github.com/aws/amazon-q-developer-cli/issues?q=) and there are no duplicates of my issue
- [x] I have run `q doctor` in the affected terminal session
- [x] I have run `q restart` and replicated the issue again

### Operating system

macOS 15.4.1 (24E263)

### Expected behaviour

MCP tools in Q CLI should be able to execute in parallel when appropriate, allowing for concurrent operations when sequential dependencies don't exist.

### Actual behaviour

Currently, all MCP tool calls in Q CLI run sequentially, even when operations could safely run in parallel, leading to unnecessary latency and a less efficient user experience.

### Steps to reproduce

_No response_

### Environment

```yaml

```