Add some support for the Lua API

[paulyoung]

I've been using these changes locally and they appear to work as expected for my project.

I would like to add an example but will need to follow up on that. It would require its own Cargo.toml (to add a main.pdz file) and I'm not sure if that will "just work".

[paulyoung]

Relates to #41

[boozook]

Thanks for the work you've done, it's very cool and that was a very lack of this! ❤️‍🔥

I would like to add an example but will need to follow up on that. It would require its own Cargo.toml (to add a main.pdz file) and I'm not sure if that will "just work".

We have [package.metadata.playdate.dev-assets] metadata. Especially for tests and examples.
It works similarly to the cargo's [dev-dependencies]:

• inherits by main assets ([package.metadata.playdate.assets])
• so in the example packages includes both - assets and dev-assets
• dev-assets are not included in the non-dev builds (packages produced for example cargo target)

There is example and example that uses that assets, and there's doc. So, it should just works.

[boozook]

Please update your branch - it could be rebase or just merge main into your branch - 👌🏻. That's need because I've made a follow-up to your prev PR with versions increment (#320).

Also there are some little changes I suggesting:

[paulyoung]

I have an example put together but something is going wrong with the asset. It works in a separate project but not in my example. I'm going to investigate further.

[paulyoung]

For what it’s worth, I’m not relying on using the Lua API for my own use case anymore but this was already done so I wanted to try and finish it up.

[boozook]

Just notice, looking to commit afd669b
I have an issue for nix - #94.

May be in future if you want, could be awesome.

[boozook]

Also please set version of playdate package to 0.2.0 here.

Thanks! ❤️‍🔥