## 🚀 Feature Proposal

Add support for the WebAuthn Automation API, a standard WebDriver extension that allows developers to create virtual authenticators to test websites using WebAuthn.

https://w3c.github.io/webauthn/#sctn-automation

_note: the above link may not work until https://github.com/w3c/webauthn/pull/1340 is merged_

## Motivation

At the moment there is no practical way to write e2e tests for pages using WebAuthn. Since this is a standard WebDriver API, the cost of implementing a layer on java is low.

## Example

For a page like this

```html
<button id="signup">Sign up with webauthn</button>
<span id="result"></span>
```

```javascript
document.getElmentById("signup").addEventListener("click", () => {
  navigator.credentials.create({...}).then(credentials => {
    document.getElementById("result").innerText = "Success!";
  })
});
```

A test could be written like so:

```java
// HasVirtualAuthenticator is an interface that augments a RemoteWebDriver.
HasVirtualAuthenticator virtualAuthenticatorManager = ((HasVirtualAuthenticator) driver);
VirtualAuthenticatorOptions options = new VirtualAuthenticatorOptions();
VirtualAuthenticator authenticator =
    virtualAuthenticatorManager.addVirtualAuthenticator(options);
driver.findElement(By.id("signup")).click();
WebElement result = driver.findElement(By.id("result"));
new WebDriverWait(driver, 60, 1000).until(
    driver -> !result.getText().equals(""));
assertThat(result.getText()).isEqualTo("Success!");
```

## Implementation

We can implement the AddVirtualAuthenticator and RemoveVirtualAuthenticator methods first since they're the most useful and follow up with the others in subsequent PRs.
String ACTIONS = "actions";
  static CommandPayload ACTIONS(Collection<Sequence> actions) {
    return new CommandPayload(ACTIONS, ImmutableMap.of("actions", actions));
  }
  String CLEAR_ACTIONS_STATE = "clearActionState";
  
  
  String CLICK = "mouseClick";
  String DOUBLE_CLICK = "mouseDoubleClick";
  String MOUSE_DOWN = "mouseButtonDown";
  String MOUSE_UP = "mouseButtonUp";
  String MOVE_TO = "mouseMoveTo";
  
  
  String IME_GET_AVAILABLE_ENGINES = "imeGetAvailableEngines";
  String IME_GET_ACTIVE_ENGINE = "imeGetActiveEngine";
  String IME_IS_ACTIVATED = "imeIsActivated";
  String IME_DEACTIVATE = "imeDeactivate";
  String IME_ACTIVATE_ENGINE = "imeActivateEngine";
  static CommandPayload IME_ACTIVATE_ENGINE(String engine) {
    return new CommandPayload(SET_ALERT_VALUE, ImmutableMap.of("engine", engine));
  }
  
  String TOUCH_SINGLE_TAP = "touchSingleTap";
  String TOUCH_DOWN = "touchDown";
  String TOUCH_UP = "touchUp";
  String TOUCH_MOVE = "touchMove";
  String TOUCH_SCROLL = "touchScroll";
  String TOUCH_DOUBLE_TAP = "touchDoubleTap";
  String TOUCH_LONG_PRESS = "touchLongPress";