feat: Preact versioning

[andy-haynes]

This PR updates the way Preact dependencies are imported and specified for third-party packages. In particular:

• Preact version is no longer configurable outside the compiler
• Preact dependencies are specified as stable/ builds to ensure the same instance is used within the imported package
• Preact dependencies are marked as external to ensure only one instance of Preact is used
• preact/compat import paths have been updated to include the build hash (X-YS9yZWFjdDpwcmVhY3QvY29tcGF0) that appears to always be imported by esm.sh bundles when react is swapped out for preact/compat subpaths required when marking preact as an external dependency

This fixes #323 and unblocks progress on importing other libraries (tested with @chakra-ui so far), though the latter still needs some work.

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[andy-haynes]

While this does fix the issue in #323, it requires specifying version 10.20.1 which does not play nice with @chakra-ui. There are still some things to uncover, but I'm starting to think we won't have a nice way to import arbitrary dependencies without being able to exercise more control over how dependencies are built.

[mpeterdev]

Phosphor icons do not appear to work on this branch even with the full path specifier. Is that expected?

[andy-haynes]

Phosphor icons do not appear to work on this branch even with the full path specifier. Is that expected?

It's broken in production since @phosphor-icons/[email protected] was published. 2.1.4 is not compatible with any Preact version I've tried, 2.0.15 is the last working I know of.

However there's a bug with specifying a version with subpaths, i.e. it should be specified as @phosphor-icons/[email protected]/dist/icons/Horse but that ends up pulling everything down 😑

I'll create an issue for the subpath versioning and fix the Component in that PR.