Component Support WIP

[martindevans]

This is a rough first pass looking at what's required for wasm component support. I've pulled in everything from the component folder of the C-API (see here) and have wrapped some of the easiest bits in the normal boilerplate (creating handles etc).

I'm absolutely not intending to complete this work solo!

We can use this branch to gather up any component related bits until we have something that works and it worth merging into main.

[cyraid]

Is there a reason for making these on to a single line vs multi-line? The multi-line is a bit more readable. :)

[UserMist]

I am currently making wasmtime bindings for Beef, language which is basically lower level C#, and I expect to mostly finish them in the next week or two. Once that's done, you can use my work as reference.