FIRST VERSION - probably has many bugs :)
Creates code lens before each describe, it and test function call in test files.
Lense on it and test functions shows last test result and can be used to run given test - tests titles needs to be unique otherwise more than one test will be executed.
Lense on describe shows aggregated results from nested functions and can be used to run all tests in given group / only test with specific status.
(WontFix) CodeLens will shown on wrong line for special multi line comment usage: (who writes comments like that???)