Migrate config to KV data format (#8392)

- adding oauth support to MinIO browser (#8400) by @kanagaraj
- supports multi-line get/set/del for all config fields
- add support for comments, allow toggle
- add extensive validation of config before saving
- support MinIO browser to support proper claims, using STS tokens
- env support for all config parameters, legacy envs are also
  supported with all documentation now pointing to latest ENVs
- preserve accessKey/secretKey from FS mode setups
- add history support implements three APIs
  - ClearHistory
  - RestoreHistory
  - ListHistory
- add help command support for each config parameters
- all the bug fixes after migration to KV, and other bug
  fixes encountered during testing.

browser/app/js/App.js

@@ -18,11 +18,13 @@ import React from "react"
 import { Route, Switch, Redirect } from "react-router-dom"
 import Browser from "./browser/Browser"
 import Login from "./browser/Login"
+import OpenIDLogin from "./browser/OpenIDLogin"
 import web from "./web"
 
 export const App = () => {
   return (
     <Switch>
+      <Route path={"/login/openid"} component={OpenIDLogin} />
       <Route path={"/login"} component={Login} />
       <Route path={"/:bucket?/*"} component={Browser} />
     </Switch>