Major 4.0 (#380)

- Migrated to WXT
- Migrated to NPM
- Added Insert & copy action
- Added ESLint

entrypoints/background.ts

@@ -0,0 +1,24 @@
+export default defineBackground(() => main());
+
+async function main(): Promise<void>
+{
+	await browser.contextMenus.removeAll();
+	browser.contextMenus.onClicked.addListener(() => browser.action.openPopup());
+
+	const showMenu: boolean = (await storage.getItem<boolean>("sync:ContextMenu", { fallback: true }))!;
+	updateMenus(showMenu);
+
+	storage.watch<boolean>("sync:ContextMenu", e => updateMenus(e!));
+}
+
+async function updateMenus(showMenus: boolean): Promise<void>
+{
+	await browser.contextMenus.removeAll();
+
+	if (showMenus)
+		browser.contextMenus.create({
+			id: "password-generator",
+			title: i18n.t("manifest.name"),
+			contexts: ["all"],
+		});
+}