Cleanup process_group_manager directory

[MaciejKaszynski]

What

After PR #370 we should organize the directories as the directory names don't respect the abstraction layers.

score/launch_manager/src/daemon/src/component_manager
├── details
│   └── process    // Each implementation of a component has a separate sub folder
│       ├── process.hpp
│       └── process_monitor.hpp
├── icomponent.hpp  // All files need to be on the component level
└── run_target.hpp

Acceptance Criteria (DoD)

• All component specific code is in a different directory to all process specific code.

How

No response