feat: add addressBook user settings section for nextcloud plugin

plugins/nextcloud/js/addressbook.js

@@ -0,0 +1,36 @@
+(rl => {
+	if (rl) {
+		class AddressBookSettings /* extends AbstractViewSettings */ {
+			constructor() {
+				this.addressBookList = ko.observableArray();
+				this.selectedAddressBook = ko.observable();
+
+				rl.pluginRemoteRequest((iError, oData) => {
+					if (!iError) {
+						const books = JSON.parse(oData.Result.addressbooks);
+						books.forEach(book => {
+							this.addressBookList.push(book);
+
+							if (book.selected) {
+								this.selectedAddressBook(book.uri);
+							}
+						});
+
+						this.selectedAddressBook.subscribe(value => {
+							rl.pluginRemoteRequest(() => { }, 'NextcloudUpdateAddressBook', {
+								uri: value
+							});
+						});
+					}
+				}, "JsonGetAddressbooks");
+			}
+		}
+
+		rl.addSettingsViewModel(
+			AddressBookSettings,
+			'AddressBookSettings',
+			'NEXTCLOUD/ADDRESS_BOOK',
+			'addressbook'
+		);
+	}
+})(window.rl);