🔄🔐 refactor: auth; style: match OpenAI; feat: custom social login order (#1421)

* refactor(Login & Registration)

* fix(Registration) test errors

* refactor(LoginForm & ResetPassword)

* fix(LoginForm): display 'undefined' when loading page; style(SocialButton): match OpenAI's graphics

* some refactor and style update for social logins

* style: width like OpenAI; feat: custom social login order; refactor: alphabetical socials

* fix(Registration & Login) test

* Update .env.example

* Update .env.example

* Update dotenv.md

* refactor: remove `SOCIAL_LOGIN_ORDER` for `socialLogins` configured from `librechat.yaml`
- initialized by AppService, attached as app.locals property
- rename socialLoginOrder and loginOrder to socialLogins app-wide for consistency
- update types and docs
- initialize config variable as array and not singular string to parse
- bump data-provider to 0.3.9

---------

Co-authored-by: Danny Avila <messagedaniel@protonmail.com>

client/tailwind.config.cjs

@@ -14,6 +14,9 @@ module.exports = {
       mono: ['Söhne Mono', 'monospace'],
     },
     extend: {
+      width: {
+        'authPageWidth': '370px',
+      },
       keyframes: {
         'accordion-down': {
           from: { height: 0 },
@@ -51,6 +54,7 @@ module.exports = {
           300: '#6dc8b9',
           400: '#41a79d',
           500: '#10a37f',
+          550: '#349072',
           600: '#126e6b',
           700: '#0a4f53',
           800: '#06373e',