#12 Improve build script with using classes. Move bootstrap to shell folder.
#12 Improve build script with using classes. Generate app-tests skeleton.
#12 Improve build script with using classes. Add unit test for command composition.
#12 Improve build script with using classes. Add command build with test and refactor tools to tool folder.
#12 Improve build script with using classes. Test add command to composition.
#12 Improve build script with using classes. Test execution.
#12 Improve build script with using classes. Add test set target test.
#12 Improve build script with using classes. Add re-generate methods.