【SwiftUI】Listの機能 – selectionでセルの単体選択、複数選択 https://shuhey-hashimoto.com/swiftui/%e3%80%90swiftui%e3%80%91list%e3%81%ae%e6%a9%9f%e8%83%bd-selection%e3%81%a7%e3%82%bb%e3%83%ab%e3%81%ae%e9%81%b8%e6%8a%9e/