[Feature]: Transformation for AWS.HttpRequest

### Self-service

- [ ] I'd be willing to implement this feature

### Problem

```js
import AWS from "aws-sdk";

const request = new AWS.HttpRequest(endpoint);
```

### Solution

```js
import { HttpRequest } from "@smithy/protocol-http";

const request = new HttpRequest(new URL(endpoint));
```

### Alternatives

N/A

### Additional context

_No response_

Start by locating the codemod entry point that handles AWS.HttpRequest constructions and any associated tests; the issue only provides the current and desired import and constructor forms. Confirm how the transformation should represent endpoint as a URL, then verify that AWS.HttpRequest usages become @smithy/protocol-http HttpRequest usages without affecting unrelated code.

Written by the indexing model from the issue text.