### 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.
#ifdef ANDROID_ENABLED
	
	PFN_xrGetInstanceProcAddr xrGetInstanceProcAddr = nullptr;
#endif
	EXT_PROTO_XRRESULT_FUNC3(xrAcquireSwapchainImage, (XrSwapchain), swapchain, (const XrSwapchainImageAcquireInfo *), acquireInfo, (uint32_t *), index)
	EXT_PROTO_XRRESULT_FUNC3(xrApplyHapticFeedback, (XrSession), session, (const XrHapticActionInfo *), hapticActionInfo, (const XrHapticBaseHeader *), hapticFeedback)
	EXT_PROTO_XRRESULT_FUNC2(xrAttachSessionActionSets, (XrSession), session, (const XrSessionActionSetsAttachInfo *), attachInfo)
	EXT_PROTO_XRRESULT_FUNC2(xrBeginFrame, (XrSession), session, (const XrFrameBeginInfo *), frameBeginInfo)
	EXT_PROTO_XRRESULT_FUNC2(xrBeginSession, (XrSession), session, (const XrSessionBeginInfo *), beginInfo)
	EXT_PROTO_XRRESULT_FUNC3(xrCreateAction, (XrActionSet), actionSet, (const XrActionCreateInfo *), createInfo, (XrAction *), action)
	EXT_PROTO_XRRESULT_FUNC3(xrCreateActionSet, (XrInstance), instance, (const XrActionSetCreateInfo *), createInfo, (XrActionSet *), actionSet)
	EXT_PROTO_XRRESULT_FUNC3(xrCreateActionSpace, (XrSession), session, (const XrActionSpaceCreateInfo *), createInfo, (XrSpace *), space)
	EXT_PROTO_XRRESULT_FUNC2(xrCreateInstance, (const XrInstanceCreateInfo *), createInfo, (XrInstance *), instance)
	EXT_PROTO_XRRESULT_FUNC3(xrCreateReferenceSpace, (XrSession), session, (const XrReferenceSpaceCreateInfo *), createInfo, (XrSpace *), space)
	EXT_PROTO_XRRESULT_FUNC3(xrCreateSession, (XrInstance), instance, (const XrSessionCreateInfo *), createInfo, (XrSession *), session)
	EXT_PROTO_XRRESULT_FUNC3(xrCreateSwapchain, (XrSession), session, (const XrSwapchainCreateInfo *), createInfo, (XrSwapchain *), swapchain)
	EXT_PROTO_XRRESULT_FUNC1(xrDestroyAction, (XrAction), action)
	EXT_PROTO_XRRESULT_FUNC1(xrDestroyActionSet, (XrActionSet), actionSet)
	EXT_PROTO_XRRESULT_FUNC1(xrDestroyInstance, (XrInstance), instance)
	EXT_PROTO_XRRESULT_FUNC1(xrDestroySession, (XrSession), session)
	EXT_PROTO_XRRESULT_FUNC1(xrDestroySpace, (XrSpace), space)
	EXT_PROTO_XRRESULT_FUNC1(xrDestroySwapchain, (XrSwapchain), swapchain)
	EXT_PROTO_XRRESULT_FUNC2(xrEndFrame, (XrSession), session, (const XrFrameEndInfo *), frameEndInfo)
	EXT_PROTO_XRRESULT_FUNC1(xrEndSession, (XrSession), session)
	EXT_PROTO_XRRESULT_FUNC3(xrEnumerateApiLayerProperties, (uint32_t), propertyCapacityInput, (uint32_t *), propertyCountOutput, (XrApiLayerProperties *), properties)
	EXT_PROTO_XRRESULT_FUNC6(xrEnumerateEnvironmentBlendModes, (XrInstance), instance, (XrSystemId), systemId, (XrViewConfigurationType), viewConfigurationType, (uint32_t), environmentBlendModeCapacityInput, (uint32_t *), environmentBlendModeCountOutput, (XrEnvironmentBlendMode *), environmentBlendModes)
	EXT_PROTO_XRRESULT_FUNC4(xrEnumerateInstanceExtensionProperties, (const char *), layerName, (uint32_t), propertyCapacityInput, (uint32_t *), propertyCountOutput, (XrExtensionProperties *), properties)
	EXT_PROTO_XRRESULT_FUNC4(xrEnumerateReferenceSpaces, (XrSession), session, (uint32_t), spaceCapacityInput, (uint32_t *), spaceCountOutput, (XrReferenceSpaceType *), spaces)
	EXT_PROTO_XRRESULT_FUNC4(xrEnumerateSwapchainFormats, (XrSession), session, (uint32_t), formatCapacityInput, (uint32_t *), formatCountOutput, (int64_t *), formats)
	EXT_PROTO_XRRESULT_FUNC5(xrEnumerateViewConfigurations, (XrInstance), instance, (XrSystemId), systemId, (uint32_t), viewConfigurationTypeCapacityInput, (uint32_t *), viewConfigurationTypeCountOutput, (XrViewConfigurationType *), viewConfigurationTypes)