What is a module in Rust?
Rust offers a robust module system to organize and manage the code's visibility. A module has several items, including functions, constants, enums, traits, and structs, into separate units.
Modules provide namespaces for your items, helping avoid naming conflicts and making it easier to reason about your code organization.
You can create a module using the mod keyword followed by the module's name and a block where you can define items inside the module.
