feat: dynamically select which auth providers for your instance of hoppscotch (be implementation)

.env.example

@@ -13,6 +13,7 @@ SESSION_SECRET='add some secret here'
 # Hoppscotch App Domain Config
 REDIRECT_URL="http://localhost:3000"
 WHITELISTED_ORIGINS = "http://localhost:3170,http://localhost:3000,http://localhost:3100"
+ALLOWED_AUTH_PROVIDERS = GOOGLE,GITHUB,MICROSOFT,EMAIL
 
 # Google Auth Config
 GOOGLE_CLIENT_ID="************************************************"