Adding the server and client code to the JSON language features extensions to enable JSONC sorting in VS Code (#174352)

* temporarily changing the funcion onFromat to be able to trigger the sorting on real examples

* adding the DocumentSortingRequest

* accesssing directly the text edits from the request

* added code in order to provide the link between the json sorting capabiliites and vscode

* adapting to the new api output of the sort function

* instead of using await use then inside of the command that registers

* textEditor replaces window.activeTextEditor

* adding changes from review

* update service

* use SortOptions

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Co-authored-by: Martin Aeschlimann <[email protected]>