Also includes fix for DOSKEY definitions. Closes https://github.com/espressif/esp-idf/issues/7605 Closes https://github.com/espressif/esp-idf/issues/7927
When user forgot to add git.exe or python to the PATH, there was a not very helpful error message. This improves the error with which tool is misssing and shows a link to the espressif installer tool.