relocate global.json under .config/dotnet.json or .config/dotnet/global.json

[smoothdeveloper]

It maybe have. been discussed that global.json at the root is a bit problematic under several aspects.

I suggest the dotnet sdk supports a better default location for it, most likely under .config, in the most agreed upon fashion, possibly based on feedback from people using many stacks without dotnet necessarily being the most prominent, just to make sure we aren't clashing with the world.

it may also impact the default location for .config/dotnet-tools.json, which is right now, the right location; but maybe it would be under .config/dotnet/tools.json according to how this feature suggestion fares.

related:

• consideration around .fsharp folder to make all fsharp tooling more cohesive fsharp/fslang-suggestions#1339
• https://github.com/dot-config/dot-config.github.io]

[dotnet-issue-labeler]

I couldn't figure out the best area label to add to this issue. If you have write-permissions please help me learn by adding exactly one area label.

[smoothdeveloper]

close to a duplicate of #3670 by me also, let me know if I should close either.

[JL03-Yue]

Close to a duplicate of #3670