unpack: Add support for extracting from TrueType Collection

[michaeltaranto]

Inspired by #156, this PR goes a little further introducing an options object and error handling (opened a separate PR due to the previous PR laying dormant).

Add support for extracting from TrueType Collection by PostScript name

Enable the extraction of font metrics for a specific font from TrueType Collection (TTC) file by providing the postscriptName option.

For example:

import { fromFile } from '@capsizecss/unpack';

const metrics = await fromFile('AvenirNext.ttc', {
  postscriptName: 'AvenirNext-Bold',
});

[changeset-bot]

🦋 Changeset detected

Latest commit: db50119

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@capsizecss/unpack	Minor

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