Include ${commit.linediff} about vscode-gitblame

[Sertion]

Hey teresaejunior!

I am not sure if I understand exactly what it should display. Could you tell me what should be returned for this change in gitcommand.ts?

[admirabilis]

Taking the example from Git Lens, the variable would return the following text:

-        ErrorHandler.getInstance().logCritical(new Error(`Can not execute "${commandPath}"`), 'The "git.path" property is not an executable');
+        ErrorHandler.getInstance().logError(new Error(`Can not execute "${commandPath}" (your git.path property) falling back to "${GIT_COMMAND_IN_PATH}"`));

If that is difficult to implement, maybe a variable that just contains - return code; could be interesting.

[Sertion]

I have had time to do some further research here and it is not possible to have line breaks in a window.showInformationMessage.

I will not add this feature unless something changes in the future.