Allow to disable active debug session warning

[TrueCarry]

Is your feature request related to a problem? Please describe.
New feature to show warning when you're saving file that's being debugged is very annoying. #2559

Describe the solution you'd like
Can you please add setting to turn it off?

[ramya-rao-a]

Thanks for reporting @TrueCarry

We can add a button Don't show again that will persist your choice and not show the warning again.

PRs are most welcome to do this
Code Pointers:

• Set up local dev env for the extension
• The place to make the edits is https://github.com/microsoft/vscode-go/blob/master/src/goMain.ts#L396
• For reference, you can use the warning we have for using the launch request with remote debugging.

[csmadhav]

Hey! I would like to work on this!

[ramya-rao-a]

The latest version of this extension (0.12.0) has the option on the warning to not show it again.

Thanks to @TrueCarry for reporting and to @csmadhav for the PR :)

Happy Coding!