Setting for Merge Editor "Show Base Top"/"Show Base Center" in user/workspace settings.json

[whut]

There is missing option to enable Merge Editor "Show Base Top"/"Show Base Center" in user/workspace settings.json. Without this option I was unable to find that VSCode Merge Editor is indeed a 3-way merge editor! Also this way I could keep it in version-controlled settings.json

Some background story about this adventure;): When I saw Merge Editor in VSCode I checked VSCode settings to check if there is a way to make it a proper 3-way merge editor and could not find it, so I started looking if someone already reported feature request for that. I found #154877 which was closed at the spot by @hediet (not nice;)), then #155251, and finally #155277, where issue was ultimately understood and implemented:). I still could not figure out how to enable it and finally I found comment by @HCanber that this option exists in three-dots menu. That was surprising as I used this menu to open the "Compare with base" option (which btw does not preserve focused line so it is useless) and it was not there. But in the end I found yet-another three-dots menu with what I wanted: showing base:) So there was one last thing to do, report this issue so no more people will struggle:)