* Support localization with i18next and Fluent
* src/i18n/strings.ftl holds all application strings. If you're going to add a
string, add it there
* src/i18n/l10n/ has all the translations (or localizations), both .ftl files
in Fluent format and .ftl.json files in which the file structure is JSON
but the values are Fluent strings
* src/i18n/i18ncli.js is a CLI tool to generate files and code given
localizations in .ftl files
So the process for adding strings looks like
1. Update src/i18n/strings.ftl
2. Add strings to code using the useTranslation hook
3. Run `node src/i18n/i18ncli.js ftl2json`
4. Build
* Set up for use with Crowdin CLI or github integration
* Added some example strings that might not change
* Expanded README to explain how to add new text
