feat(ClubTeam): add planned league name field and localization updates

- Introduced a new field for planned league name in the ClubTeam model, allowing for better team categorization.
- Updated create and update club team endpoints to handle the new planned league name field.
- Enhanced the PDF generation feature to include planned league name in the output.
- Improved localization files across multiple languages to incorporate new terms related to the planned league, ensuring a consistent user experience.
- Updated the TeamManagementView to display and edit the planned league name, enhancing user interaction.

backend/services/clubTeamService.js

@@ -44,6 +44,7 @@ class ClubTeamService {
                     myTischtennisTeamId: clubTeam.myTischtennisTeamId,
                     teamGender: clubTeam.teamGender,
                     teamAgeGroup: clubTeam.teamAgeGroup,
+                    plannedLeagueName: clubTeam.plannedLeagueName,
                     createdAt: clubTeam.createdAt,
                     updatedAt: clubTeam.updatedAt,
                     league: { name: 'Unbekannt' },