Sort JSONC files on save (#188480)

* adding the initial code for sorting on save setting

* adding code, it is working, but how to get the text editor options

* cleaning the code

* making the callback synchronous, why does waitUntil not work

* removed unwated edit

* previously the check on is text edit instance was throwing an error, now checking manually that it is working

* chaning the return type of `getOptionsForDocument` to udnefined by default

* Convert to TextEdit instances

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