feat: define missing types (in progress)

[kuamanet]

While this is far from being complete, it's a start to enable projects with typescript to start adding your library as a dependency without having tsc compain.

[Abhinandan-Kushwaha]

Thanks @kuamanet for this valuable PR.
Please drop a comment here me when it is ready from your side.

[kuamanet]

Given that the aim is "make it at least compile" the pr is ready for me :)
Types can be improved of course, but I'd merge it to achieve the first step of functionality

[Abhinandan-Kushwaha]

Hi @kuamanet
The code deployed on npm was using the branch dualFrameBuilt. This branch was several commits ahead of main, and already has type-related changes.

I just merged it to main.
I apologise for the confusion due to which you might have made redundant changes.

Please take a pull from main. If resolving the conflicts is too cumbersome, consider raising another PR.

Thanks once again.