Feat/proxy callbacks

[Keyrxng]

Resolves ubiquity-os/plugin-sdk#33

• adds CallbackBuilder class to help build the proxyCallbacks object
• createPlugin takes CallbackBuilder instead of handler()
• wrote a post-build script to clean and build a package.json for each dir we end up having
• /sdk and /types right now but easy to add others

QA: ubq-testing/qa-plugin#1

Building callbacks:

Callback signature:

Clean package.json per dist dir:

[Keyrxng]

@gentlementlegen @whilefoo Fancy a peak?

Still to accommodate actions, fix failing tests and will do that tmrw but it's a matter of replicating the code pretty much (will try to avoid actually copy/pasting).

Anything sticking out so far that's a deal breaker?

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Also am I correct in thinking the package.json in this repo is configured for the kernel, not specifically the SDK of the kernel?

[Keyrxng]

[gentlementlegen]

Is this needed since we moved the SDK out?

[gentlementlegen]

Overall I think it's fine but maybe you should remove all the SDK related code.

[Keyrxng]

Makes sense to PR the SDK so I'll need to redo this PR

[Keyrxng]

ubiquity-os-marketplace/command-ask#26 (comment)

If this PR is a priority can the task be priced and I'll be happy to re-do things (once the location of where the SDK will live is decided)