feat: set taskmaster manifest from FOCA config

[JaeAeich]

Summary by Sourcery

Configure the taskmaster manifest from FOCA configuration by adding new methods to retrieve custom configurations and taskmaster templates. Enhance the configuration model to include taskmaster-specific properties, enabling more flexible and dynamic taskmaster setup.

New Features:

• Introduce the ability to configure the taskmaster manifest using FOCA configuration, allowing for dynamic setup of taskmaster properties.

Enhancements:

• Add a new custom configuration model for taskmaster environment properties, including image details, FTP settings, and executor secret configuration.