More progress on translations:
- Migrate from translations.io to crowdin
- Optimize performance and robustness
- Set workspaceMember/user locale upon signup
Refers #8128
Changes Introduced:
- Added i18n configuration.
- Added a feature flag for localization.
- Enabled language switching based on the flag.
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Co-authored-by: Félix Malfait <felix@twenty.com>