feat: add `source.format.oxc` code action (#164)

* feat: add `source.format.oxc` code action and `oxc.formatDocument` command

* add test for command

* add test for code action `source.format.oxc` on editor.codeActionsOnSave

* use builtin format command

* remove unused method

* remove unused enum member

* fix test

* skip test for now

* Update client/tools/formatter.ts

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Signed-off-by: Alexander S. <sysix@sysix-coding.de>

* with document selector

* check if we are the formatter for the doc

* update readme

* review

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Signed-off-by: Alexander S. <sysix@sysix-coding.de>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>