[feature] TDD interactive guide #366
Description
Is your feature request related to a problem? Please describe
It'd be great to have a command that allows to start an interactive TDD guide by completing one simple exercise.
Describe the solution you'd like
Add a command line npx tdd-start which creates a file with an example failing test, where you need to write the simplest possible solution for it to pass. If the test passes, it should ask the user if any refactor to make the code better is possible. If not, move to the next example increasing the complexity a little bit.
Testy should explain all different steps of TDD in each single phase of the exercise.