Add the very first dev-oriented setting and a DevSettingsConfig to manage it

module/apps/DevSettingsMenu.mjs

@@ -0,0 +1,20 @@
+import { devSettings } from "../utils/DevSettings.mjs";
+import { OFTSettingsMenu } from "./OFTSettingsMenu.mjs";
+
+export class DevSettingsMenu extends OFTSettingsMenu {
+	static DEFAULT_OPTIONS = {
+		window: {
+			title: `OFT.menu.devSettings.name`,
+		},
+	};
+
+	static get _SETTINGS() {
+		const settingIDs = [];
+		for (const [settingID, shown] of devSettings.entries()) {
+			if (shown) {
+				settingIDs.push(settingID);
+			};
+		};
+		return settingIDs;
+	};
+};