### Describe the bug

Module http adapter is not beind exported, so I cannot force axios to use the http adapter instead of xhr

### To Reproduce

```js
const axios =  require('axios');
const url = 'https://catfact.ninja/fact';
axios.get(url, {
  adapter: require('axios/lib/adapters/http'),
}).then(console.log).catch(console.log);
```
or 
```js
const instance = axios.create({
  adapter: require('axios/lib/adapters/http'),
})
```
It works using axios@0.27.2




### Expected behavior

Use HTTP adapter

### Axios Version

1.1.3 and 1.2.0-alpha.1

### Adapter Version

HTTP

### Browser

_No response_

### Browser Version

_No response_

### Node.js Version

19.0.0

### OS

_No response_

### Additional Library Versions

_No response_

### Additional context/Screenshots

_No response_
lib/adapters/http.js
if (options.beforeRedirects.proxy) {
    options.beforeRedirects.proxy(options);
  }
  if (options.beforeRedirects.config) {
    options.beforeRedirects.config(options);
  }
}
/**
 * If the proxy or config afterRedirects functions are defined, call them with the options
 *
 * @param {http.ClientRequestArgs} options
 * @param {AxiosProxyConfig} configProxy configuration from Axios options object
 * @param {string} location
 *
 * @returns {http.ClientRequestArgs}
 */
function setProxy(options, configProxy, location) {
  let proxy = configProxy;
  if (!proxy && proxy !== false) {
    const proxyUrl = getProxyForUrl(location);
    if (proxyUrl) {
      proxy = new URL(proxyUrl);
    }
  }
  if (proxy) {
    
    if (proxy.username) {