Add TestSecurityConfig for improved test setup and update configurations

- Introduce `TestSecurityConfig` to simplify JWT usage in test environments.
- Update integration tests to import `TestSecurityConfig`.
- Split environment-specific configurations into new `application-dev.yml` and `applications-prod.yml` files.
- Adjust `docker-compose.yml` for development-specific settings.
- Clean up redundant JWT properties in `application.yml`.

docker-compose.yml

@@ -28,6 +28,8 @@ services:
       KC_HOSTNAME_URL: "http://localhost:8081/"
       KC_HOSTNAME_ADMIN_URL: "http://localhost:8081/"
       KC_HOSTNAME_STRICT_HTTPS: "false"
+    extra_hosts:
+      - "host.docker.internal:host-gateway"
 
     ports:
       - "8081:8081"
@@ -44,6 +46,9 @@ services:
     depends_on:
       postgres: { condition: service_healthy }
     environment:
+      # Aktivera Spring-profilen "dev"
+      SPRING_PROFILES_ACTIVE: dev
+
       SPRING_DATASOURCE_URL: jdbc:postgresql://postgres:5432/hemhub
       SPRING_DATASOURCE_USERNAME: hemhub
       SPRING_DATASOURCE_PASSWORD: hemhub