impl Index on XCUIElementQuery, siri, device buttons and orientation in objc2-xc-ui-automation

[simlay]

I've been playing around with the objc2-xc-ui-automation crate and figure some additional features should be added.

Most of this is really just a stop gap in place of #408

I spent like 20 minutes fighting Retained<XCUIElementQuery> and &XCUIElementQuery and then I asked claude for some help which it suggested dereferencing *mut T. I'm not really a fan but I'm not sure what's better.

I was already in the space and had noticed some other pieces that would be nice.

• framework-crates/objc2-xu-ui-automation/src/device_buttons.rs has the XCUIDeviceButtons conditionally compiled for iOS, watchOS, visionOS and tvOS. These can be used via pressButton.
• framework-crates/objc2-xu-ui-automation/src/siri.rs adds getting the siriService out of the XCUIDevice, and the corresponding XCUISiriService struct and it's few calls.
• framework-crates/objc2-xu-ui-automation/src/orientation.rs adds the calls of setOrientation and orientation on XCUIDevice. This should ideally be behind a feature flag of objc2-ui-kit as the generated stuff would be and then have objc2-ui-kit as an optional dependency. It's sloppy but I figure that just duplicating the UIOrientation struct might be the least bad. Is there a flag to translation-config.toml to do this nicely?

If there's not a great way to do the Index trait or orientation, I'm cool with dropping them.

[madsmtm]

I'm fine with carrying manual additions like these until we progress further on #408.

[simlay]

I tested XCUIDevice::setOrientation, XCUIDevice::pressButton(XCUIDeviceButton::Home) and XCUISiriService::activateWithVoiceRecognitionText(&NSString::from_str("What is the capital of germany?"));. This is the recording:

record-compressed.mp4

The change in orientation doesn't change the macOS simulator app's orientation but it does actually change the orientation of the app inside the simulator.

[madsmtm]

I don't think this works without changes to the translator, so I've removed it for now

[madsmtm]

Looks good, thanks! And sorry for letting this PR languish a bit.