Implemented an IdleCommand class and a builder for this class in the Commands class. These changes provide a way to construct commands that do nothing until they're interrupted. This could be useful when creating continuously scheduled commands that are intended to run only once, such as subsystem default commands.

…n the Commands class instead of having it as an isolated class.

Moved the idle factory method alongside the other idling / waiting factories

Changed the way `idle` command is created from using a new instance of `RunCommand` to a call to `run`, improving code readability and consistency.

Refactored the way `idle` command is created in Commands.java and Commands.cpp by removing the requirement parameter.

Applied minor changes to improve the readability and maintenance of the code in `Commands.java`, `Commands.cpp` and `Commands.h`. Aligned the lambda expression and adjusted the indentation of comments for the `idle` method. No functionality change was introduced.

Redundant '@param requirements' in the function documentation of the 'idle' method is removed in `Commands.h` file.