### 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.
ERR_FAIL_COND_V(session == XR_NULL_HANDLE, false);
	if (supported_swapchain_formats != nullptr) {
		
		memfree(supported_swapchain_formats);
		supported_swapchain_formats = nullptr;
	}
	XrResult result = xrEnumerateSwapchainFormats(session, 0, &num_swapchain_formats, nullptr);
	if (XR_FAILED(result)) {
		print_line("OpenXR: Failed to get swapchain format count [", get_error_string(result), "]");
		return false;
	}
	supported_swapchain_formats = (int64_t *)memalloc(sizeof(int64_t) * num_swapchain_formats);
	ERR_FAIL_NULL_V(supported_swapchain_formats, false);
	result = xrEnumerateSwapchainFormats(session, num_swapchain_formats, &num_swapchain_formats, supported_swapchain_formats);
	ERR_FAIL_COND_V_MSG(XR_FAILED(result), false, "OpenXR: Failed to enumerate swapchain formats");
	for (uint32_t i = 0; i < num_swapchain_formats; i++) {
		print_verbose(String("OpenXR: Found supported swapchain format ") + get_swapchain_format_name(supported_swapchain_formats[i]));
	}
	return true;
}
bool OpenXRAPI::is_swapchain_format_supported(int64_t p_swapchain_format) {