Rename some things from v4 to v2

resources/assets/v2/boot/axios.js

@@ -0,0 +1,40 @@
+/*
+ * axios.js
+ * Copyright (c) 2022 james@firefly-iii.org
+ *
+ * This file is part of Firefly III (https://github.com/firefly-iii).
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import axios from 'axios'
+
+// Be careful when using SSR for cross-request state pollution
+// due to creating a Singleton instance here;
+// If any client changes this (global) instance, it might be a
+// good idea to move this instance creation inside of the
+// "export default () => {}" function below (which runs individually
+// for each client)
+
+
+// for use inside Vue files (Options API) through this.$axios and this.$api
+
+
+const url = '/';
+const api = axios.create({baseURL: url, withCredentials: true});
+
+axios.defaults.withCredentials = true;
+axios.defaults.baseURL = url;
+
+export {api}