Upgrade project dependencies and improve localization

- Updated package versions in package-lock.json for better security and performance.
- Created a new modal for adding annotations, improving user interaction.
- Refactored language translations into a dedicated folder for better organization.
- Enhanced models by moving shared logic to FileModel, reducing duplication.
- Adjusted TaskModel to enrich task-related functionalities for user tasks.
- Streamlined BaseModel into FileModel for a clearer inheritance structure.
- Improved code quality by renaming and cleaning up methods and properties.
- Adjusted directory references for translations to reflect new structure.
- Made Tag.getValidTags method static as it does not rely on instance state.

- Version bump to V0.0.28

manifest.json

@@ -1,7 +1,7 @@
 {
   "id": "prj",
   "name": "Prj Plugin",
-  "version": "0.0.27",
+  "version": "0.0.28",
   "minAppVersion": "0.15.0",
   "description": "Prj Plugin - Project, Document, and Task Management",
   "author": "M. Passarello",