Add prompt to flip "inheritEnv" setting to false to fix conda activation issue

[luabud]

To address #5764

if it isn't a Windows machine and if the selected interpreter is a conda environment and "terminal.integrated.inheritEnv" is not set on the user's user settings, we can prompt the message below:

"We noticed you're using a conda environment. If you are experiencing issues with this environment in the integrated terminal, we suggest the "terminal.integrated.inheritEnv" setting to be changed to false. Would you like to update this setting?"
Options: Yes, No

And add telemetry for the yes selection, so we can know if this is actually solving the issue.

[karthiknadig]

If the user dismisses (the "X") we should show it again. The context of the setting is User Setting, and should apply to all work spaces.

[karthiknadig]

Looks like inheritEnv is set by default, in user settings. This was from a fresh install of vscode:

[luabud]

Just to make sure everyone understands what is the issue, the prompt is being displayed for Windows users (and apparently not for Mac nor Linux) as you can see here: #7861
Whoever works on this, please can you change the wording to specify that the changes will be on the settings.json file in the prompt, as described in the issue above? i.e. "[...], we suggest the "terminal.integrated.inheritEnv" setting to be changed to false in the settings.json file. [...]"

[DonJayamanne]

setting to be changed to false in the settings.json file

Can I suggest we change as follows setting to be changed to false in the settings (settings.json file)

Novice users won't know what settings.json file is. VS Code has change the default settings configuration to a fancy UI and hidden the settings.json file behind the UI.

[kylekeppler]

I had to also run conda init powershell in the VS code powershell terminal. After running that once, the correct env is activated in the future when creating powershell terminals in VS code. (Conda 4.7.12, VS Code 1.38.2, Python Ext 2019.10.41019)

[karthiknadig]

Verified on Linux:

[kimadeline]

Verified on Windows with 2019.11.42782-dev: Nothing appeared when opening a workspace and selecting a conda environment.

Closing this issue and #7733.