Show/hide line numbers in preferences

Relevant sub-area for this feature?

Core/Environment/Rendering

Feature description

Minor feature. I feel it would be nice for users to have the option of hiding line numbers if they would like to, as is common in other coding sketchbooks. This could be set in preferences, with default line numbers showing.

Benefits

Some users may want a more distraction-free, minimalist environment.

Possible challenges

None, this should be a simple feature to implement

Additional context

No response

Would you like to work on the issue?

Yes

Core/Environment/Rendering 領域から開始し、エディターの環境設定が行番号の表示をどのように制御しているかを追跡します。環境設定がどのように保存され適用されるかを確認し、そのうえで、行番号がデフォルトで引き続き表示され、新しい環境設定によって非表示にできることを検証します。