Jonas Jenwald 709d89420e Re-factor how the GenericL10n class fetches localization-data
- Re-factor the existing `fetchData` helper function such that it can fetch more types of data, and it now supports "arraybuffer", "json", and "text".
   This only needed minor adjustments in the `DOMCMapReaderFactory` and `DOMStandardFontDataFactory` classes.[1]

 - Expose the `fetchData` helper function in the API, such that the viewer is able to access it.

 - Use the `fetchData` helper function in the `GenericL10n` class, since this should allow fetching of localization-data even if the default viewer is run in an environment without support for the Fetch API.

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[1] While testing this I also noticed a minor inconsistency when handling standard font-data on the worker-thread.
2023-11-14 13:45:14 +01:00
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