Multilingual Support for OBF and Asterics Files

[willwade]

This PR enhances the platform's support for multilingual AAC boards, specifically targeting the Open Board Format (OBF) and Asterics Grid format.

Key Changes:

1. Core Interface Update: Updated BaseProcessor.processTexts to accept an optional targetLocale. This allows processors to distinguish between "translating the current language" (replacement) and "adding a new language layer" (multilingual extension).
2. OBF Support:
   • Updated ObfProcessor to parse and utilize the strings dictionary for localized text resolution.
   • Implemented a new "Raw" processing mode in processTexts that directly manipulates the OBF/JSON structure (or OBZ/Zip contents) to populate the strings dictionary when a targetLocale is provided. This ensures that the original source keys are preserved or normalized.
3. Asterics Support:
   • Updated AstericsGridProcessor to add translations to the localized label maps (e.g., adding es: "Hola" alongside en: "Hello") when targetLocale is used.
   • Added robustness checks to handle legacy files where labels might be simple strings instead of objects.
4. Testing: Added new test assets and suites to verify that languages can be successfully added to both formats without corrupting existing data.

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PR created automatically by Jules for task 10560621860859204093 started by @willwade

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