Reduce Code Duplication

[msmith-ccom]

Issue: Codeacy indicates significant code duplication. There are large sections of the code base that have similar functionality that could be compressed. An example is below.

Example: When adding a raw file, three different 'add' methods are called, all with almost the exact same code.
project_info.add_raw:

raws.add_raw:

process.add_process:

Objective: Refactor code to reduce complexity and duplication

[msmith-ccom]

I can envision a preferable solution where there is a nc_file manager. adding a file (the injection point is currently in the project class) would involve passing the file name, along with the project_info.nc path, raw and process directory paths to the file_manager, which could then create the appropriate files and track status.