feat(user): add certificate production tracking and update localization

- Introduced a new field `certificateProductionsCountSince` in the `FalukantUser` model to track the date from which production logs are counted for certificate requirements.
- Updated the `FalukantService` to utilize the new field for calculating completed productions since the specified date.
- Enhanced the UI to display the count of productions since the last promotion, with corresponding translations added for multiple languages including Cebuano, German, English, Spanish, and French.
- Implemented a method to delete old production logs, ensuring efficient data management while maintaining necessary historical records for certificate calculations.

frontend/src/i18n/locales/en/falukant.json

@@ -159,6 +159,7 @@
                 },
                 "factors": "Current values",
                 "requirements": "Requirements for the next level",
+                "productionsSince": "Only productions on or after {date} count (since last promotion, bankruptcy, or succession).",
                 "factor": {
                     "avgKnowledge": "Average knowledge",
                     "completedProductions": "Completed productions",