Implement church career management features

- Added endpoints for church career functionalities including overview, available positions, application submission, and application decision-making.
- Enhanced the FalukantController to handle church-related requests.
- Updated associations and models to support church office types and requirements.
- Integrated new routes in the falukantRouter for church career operations.
- Implemented service methods for managing church applications and checking church career status.
- Updated frontend components to display current positions, available positions, and manage applications with appropriate UI elements and loading states.
- Localized new church-related strings in both English and German.

backend/models/falukant/predefine/church_office_requirement.js

@@ -0,0 +1,35 @@
+import { Model, DataTypes } from 'sequelize';
+import { sequelize } from '../../../utils/sequelize.js';
+
+class ChurchOfficeRequirement extends Model {}
+
+ChurchOfficeRequirement.init({
+  id: {
+    type: DataTypes.INTEGER,
+    primaryKey: true,
+    autoIncrement: true
+  },
+  officeTypeId: {
+    type: DataTypes.INTEGER,
+    allowNull: false
+  },
+  prerequisiteOfficeTypeId: {
+    type: DataTypes.INTEGER,
+    allowNull: true,
+    comment: 'Erforderliche niedrigere Position in der Hierarchie'
+  },
+  minTitleLevel: {
+    type: DataTypes.INTEGER,
+    allowNull: true,
+    comment: 'Mindest-Titel-Level (optional)'
+  }
+}, {
+  sequelize,
+  modelName: 'ChurchOfficeRequirement',
+  tableName: 'church_office_requirement',
+  schema: 'falukant_predefine',
+  timestamps: false,
+  underscored: true
+});
+
+export default ChurchOfficeRequirement;