feat(admin): implement pregnancy and birth management features

- Added new admin functionalities to force pregnancy, clear pregnancy, and trigger birth for characters.
- Introduced corresponding routes and controller methods in adminRouter and adminController.
- Enhanced the FalukantCharacter model to include pregnancy-related fields.
- Created database migration for adding pregnancy columns to the character table.
- Updated frontend views and internationalization files to support new pregnancy and birth management features.
- Improved user feedback and error handling for these new actions.

backend/services/falukantService.js

@@ -3518,7 +3518,13 @@ class FalukantService extends BaseService {
             deathPartners: relationships.filter(r => r.relationshipType === 'widowed'),
             children: children.map(({ _createdAt, ...rest }) => rest),
             possiblePartners: [],
-            possibleLovers: []
+            possibleLovers: [],
+            pregnancy: character.pregnancyDueAt
+                ? {
+                    dueAt: character.pregnancyDueAt,
+                    fatherCharacterId: character.pregnancyFatherCharacterId,
+                }
+                : null,
         };
         const ownAge = calcAge(character.birthdate);
         if (ownAge >= 12) {