removed unused import
added jar bootstrap file
changed testresult folder usage

* fixed: multiple uses of testresult folder member possible without delete
* changed: removed additional subfolder creation in TestConvertProjects
* changed: folder structure to class_name/testcase_name/
added license header / link; remove wave.py (#GSOCSTCC-24)

* changed: wave.py (from Python standard library) subsituted by SoX --info