### Godot version

4.2.dev 80de898d721f952dac0b102d48bb73d6b02ee1e8

### System information

OpenXR

### Issue description

The Godot 3 OpenXR plugin supported obtaining boundary/guardian information in order to obtain play space logic. While we do have a function in the `XRInterface` in Godot 4 that is supposed to retrieve this information (`get_play_area`) it is not implemented on the Godot 4 `OpenXRInterface`.

This logic needs to be ported.

### Steps to reproduce

Call `get_play_area`, be amazed by it not returning data :P

### Minimal reproduction project

Any XR project.
swapchains[i].swapchain = XR_NULL_HANDLE;
		}
	}
	if (supported_swapchain_formats != nullptr) {
		memfree(supported_swapchain_formats);
		supported_swapchain_formats = nullptr;
	}
	
	if (play_space != XR_NULL_HANDLE) {
		xrDestroySpace(play_space);
		play_space = XR_NULL_HANDLE;
	}
	if (view_space != XR_NULL_HANDLE) {
		xrDestroySpace(view_space);
		view_space = XR_NULL_HANDLE;
	}
	if (supported_reference_spaces != nullptr) {
		
		memfree(supported_reference_spaces);
		supported_reference_spaces = nullptr;
	}
	if (session != XR_NULL_HANDLE) {
		for (OpenXRExtensionWrapper *wrapper : registered_extension_wrappers) {
			wrapper->on_session_destroyed();
		}
		xrDestroySession(session);
		session = XR_NULL_HANDLE;
	}
}
bool OpenXRAPI::create_swapchain(XrSwapchainUsageFlags p_usage_flags, int64_t p_swapchain_format, uint32_t p_width, uint32_t p_height, uint32_t p_sample_count, uint32_t p_array_size, XrSwapchain &r_swapchain, void **r_swapchain_graphics_data) {