* Categorize kernels in the notebook kernel picker

* rename property

* address review comments

* more changes

* fix liner

* address review comments

Fixes #134462

fix #129120

When lauching with `env POSIXLY_CORRECT=y code [...]`, VSCode creates two directories named `-m` and `700`. This is because the order of arguments, in a POSIX strict environment, matters.

Fixes #135440 by allowing the preselection range to be longer than the range of the preselected item.

refine check for knowing if a view zone is visible, https://github.com/microsoft/vscode/issues/121516

Implements #134801 by introducing editorBracketPairGuideBackground{1..6} and editorBracketPairGuideActiveBackground{1..6}.

Option to preserve focus while showing view

Enforce use of custom title style when the window border color is applied.

Fix the rounded corners on macOS Big Sur and newer to match the new style of the OS.

* horizontal and vertical border for side by side editor

* 💄Co-authored-by: NBenjamin Pasero <benjamin.pasero@microsoft.com>