[Feature] Creation of a Comprehensive USAGE.md File

[ErikBavenstrand]

Is your feature request related to a problem? Please describe.
Currently, there is no USAGE.md file in the mleko library. This makes it difficult for new users to understand how to use the library effectively.

Describe the solution you'd like
A USAGE.md file should be created that provides comprehensive instructions on how to use the mleko library. This should include examples of common use cases, explanations of key functions and parameters, and any other information that would be helpful to users.

Describe alternatives you've considered
An alternative could be to include usage instructions in the README.md file. However, having a separate USAGE.md file would be more organized and easier for users to navigate.

Additional context
Having clear and comprehensive usage instructions is crucial for any library. This would greatly enhance the usability of the mleko library and help users get the most out of its features.