control names of IDE project files

What kind of issue is this?

• Feature Request.
  Start by telling us what problem you’re trying to solve. Often a solution
  already exists! Don’t send pull requests to implement new features without first getting our
  support. Sometimes we leave features out on purpose to keep the project small.

Description of problem

At least for Qt Creator, the project name follows the name of the generated *.creator file (and associated files) rather than the directory name. So if pio project init always uses the basename platformio for generated files, all the projects will have the same name in the IDE.

Since there are now multiple files generated for qtcreator, renaming is tedious (though I can do it with a utility like rename).

Expected Results

Perhaps project init should name the IDE project files following the directory name.

Start with the pio project init entry point and trace how generated Qt Creator *.creator and associated files are named. Check whether existing project-generation tests cover these files. Done means generated IDE project files follow the project directory name instead of always using platformio.