major rework of backend loading and usage:

- split config from user data to config.json, add config.hson.template
- moved default user data localdb to root folder
- moved pve, localdb, ldap backend handlers to backends sub folder
- add dynamic loading of all backends
- add dynamic mapping for auth backends to support multiple auth sources
- update affected endpoints

src/routes/user.js

@@ -1,11 +1,8 @@
 import { Router } from "express";
 export const router = Router({ mergeParams: true }); ;
 
-const db = global.db;
-const requestPVE = global.pve.requestPVE;
 const checkAuth = global.utils.checkAuth;
 const getUserResources = global.utils.getUserResources;
-const pveAPIToken = global.db.pveAPIToken;
 
 /**
  * GET - get db user resource information including allocated, free, and maximum resource values along with resource metadata
@@ -43,7 +40,7 @@ router.get("/config/:key", async (req, res) => {
 	}
 	const allowKeys = ["resources", "cluster", "nodes"];
 	if (allowKeys.includes(params.key)) {
-		const config = db.getUser(req.cookies.username);
+		const config = global.db.getUser(req.cookies.username);
 		res.status(200).send(config[params.key]);
 	}
 	else {
@@ -64,9 +61,9 @@ router.get("/iso", async (req, res) => {
 		return;
 	}
 	// get user iso config
-	const userIsoConfig = db.getGlobal().useriso;
+	const userIsoConfig = global.config.useriso;
 	// get all isos
-	const isos = (await requestPVE(`/nodes/${userIsoConfig.node}/storage/${userIsoConfig.storage}/content?content=iso`, "GET", { token: pveAPIToken })).data.data;
+	const isos = (await global.pve.requestPVE(`/nodes/${userIsoConfig.node}/storage/${userIsoConfig.storage}/content?content=iso`, "GET", { token: true })).data.data;
 	const userIsos = [];
 	isos.forEach((iso) => {
 		iso.name = iso.volid.replace(`${userIsoConfig.storage}:iso/`, "");