Add Rusty Playdate tooling/libs

[boozook]

Actually there are tooling and libraries, so 🤷🏻‍♂️

Part of #1505

[janhohenheim]

@boozook should I complete the PR for you? :)

[boozook]

@janhohenheim thank you! It would be super incredibly helpful. I just working on next release and trying to make it by the end of the month. And I also hoped to finish this PR after the release. But seriously not sure now 🤷🏻‍♂️.

[boozook]

I've made the release but without one big feature that I'm still working on.
links:

• post
• release

Currently working on:

• Assets-builder refactoring
• Support overridings for cargo-targets (bins, dev-targets such as examples)
• Fix issue when underlying cargo in the cargo-playdate touches host-cargo's cache and so triggering full-rebuild. Trying to rid of using underlying cargo's build-context.

[boozook]

And here is what I mean as missed part of that release. That's just a first part😱

[janhohenheim]

@boozook what do you think about this? :)

[boozook]

@janhohenheim, Looks great, thank you so much! ☺️