Version 1.2.0

- [FEATURE] Provide non-Composer version of Extension
- Error out early if a file with an unsupported extension is being processed
- Conditionally instantiate IconFactory on TYPO3 13 (fixes 16, 11)
- [FEATURE] Allow to change language configuration for FAL storage substructures
- [FEATURE] Command line interface to perform mass updates on existing FAL asset metadata (2) 
- Fix TYPO3 v13.4 compatibility