Tooling must write dynamic text files (.srt) with fillColor field in header

1. Tooling must write dynamic text files (.srt) with fillColor field in header

Definition of Done

1. Unit tests are implemented
2. Quality gates passed (reviews, coverage, optionally CVE).
3. TestRail entry done
4. API documentation done (for QML), comments added in code.
5. Architecture documentation is updated.
6. Design documentation is updated.