The current package/files structure is not separated per product, hence the responsibility of files cannot be decided.
Each product should move the classes that are solely under his and not shared between multiple products under his product name for example "pc" folder.
For example, RunFromFileBuilder.class is used by UFT, LR, MC and should stay in his current location until moved by me.
The inner structure of the files inside your product name is for your own choosing.
For reference, you can view SRF/Octane which folders.
Do not forget about moving the resources as well (jelly files), their location is critical.