Add template for Formbricks

### Application Name

Formbricks

### Describe the application

Formbricks provides a free and open source surveying platform.

### URL to the application

https://formbricks.com/

### Source code

https://github.com/formbricks/formbricks

### Application Icon

https://avatars.githubusercontent.com/u/105877416

### Link to Docker compose

https://github.com/formbricks/formbricks/blob/main/docker/docker-compose.yml

### Maintainer

- [ ] I am the maintainer

Review the linked Formbricks source and its docker/docker-compose.yml first, then compare its requirements with Kubero's existing application templates. Add the Formbricks template in the matching format and verify that the compose configuration is represented correctly for deployment.

Written by the indexing model from the issue text.