Search for r.rterm.linux/mac on system PATH

[gdevenyi]

Is your feature request related to a problem? Please describe. I should not have to provide the full path to radian in order to use it as the console

Describe the solution you'd like I have radian available on PATH, vscode should just be able to use it without pointing directly to it, like it currently does transparently, for R if I don't specify r.rterm.linux

The command provided in r.rterm.linux should try to execute the command using the system PATH if an absolute path is not specified.

[github-actions[bot]]

This issue is stale because it has been open for 365 days with no activity.

[gdevenyi]

This issue is not stale.