Building modular ink! project

[cenwadike]

How do you organize an ink! project with modular ink! project?

Most ink examples place all functionalities (contract and tests) in a single file which isn't really great to read through as files become too long to read.

I also had challenges separating my ink! code into separate files...such that I had to keep all my contract separate logical functionalities in a single file.

I would be grateful to see a simple example on separation of concern.