Check if user.home folder can be used before downloading tool

[sbouchet]

see redhat-developer/intellij-openshift-connector#538 for reported issue.

tracked down to

intellij-common/src/main/java/com/redhat/devtools/intellij/common/utils/DownloadHelper.java

Line 142 in f766930

Path path = Paths.get(tool.getBaseDir().replace("$HOME", CommonConstants.HOME_FOLDER), "cache", tool.getVersion(), command);

the issue is the user can't execute downloaded file because IJ openshift uses $HOME/.odo as destination.

proposed change if to move to System.getenv("APPDATA") for windows users?

[adietish]

@sbouchet I agree, System.getenv("APPDATA") seems to be the right choice for windows

App data is mutable data that is created and managed by a specific app. It includes runtime state, app settings, user preferences, reference content (such as the dictionary definitions in a dictionary app)

(source: https://learn.microsoft.com/en-us/windows/apps/design/app-settings/store-and-retrieve-app-data).

Is there a need to migrate existing data to the new location?