Uninstalling mbed CLI leaves apps and env variables

mbed Windows installer: mbed CLI v0.3.6-alpha

First I installed mbed CLI without any of the required apps (python, git, hg, gcc)

Later I uninstalled mbed CLI. It only removes mbed-cli and gcc.

Other apps continue to exist (and work) with the corresponding environmental variables: python, git, hg

We could add an option to the uninstaller to remove the apps: python, git, hg, gcc

@arekzaluski

Start by inspecting the Windows installer project's uninstaller configuration and how it handles the installed apps and environment variables named in the report: python, git, hg, and gcc. Done means the uninstall behavior clearly offers or implements removal of those dependencies without leaving their corresponding environment variables behind.

Written by the indexing model from the issue text.