feat(rsg): Add boundingrect function to node

[underwoo16]

Implemented boundingRect function for roSGNode with zero-defaulted values

https://developer.roku.com/docs/references/brightscript/interfaces/ifsgnodeboundingrect.md

[lkipke]

I'm fine with this, given that we have several other components with skeleton implementations. Can you also open a PR into roca to update the docs? Probably this one specifically: implementation-gaps.md

[underwoo16]

I'm fine with this, given that we have several other components with skeleton implementations. Can you also open a PR into roca to update the docs? Probably this one specifically: implementation-gaps.md

I think the comment that it is mostly complete is still accurate since I only implemented one out of ~7 methods from this interface. I have never seen the other methods used so I only implemented boundingrect.

Would you prefer I implement all of the methods or file an issue to complete the missing methods?

[sjbarag]

I'm fine with this, given that we have several other components with skeleton implementations. Can you also open a PR into roca to update the docs? Probably this one specifically: implementation-gaps.md

I think the comment that it is mostly complete is still accurate since I only implemented one out of ~7 methods from this interface. I have never seen the other methods used so I only implemented boundingrect.

Would you prefer I implement all of the methods or file an issue to complete the missing methods?

You're fine as-is for now 🤷 It's still mostly-complete, and we're getting closer slowly