Start auth provider system

src/auth/config.ts

@@ -1,11 +1,12 @@
 import {Instantiable, isInstantiable} from '../di'
 import {AuthenticatableRepository} from './types'
 import {hasOwnProperty} from '../util'
+import {LoginProviderConfig} from './provider/LoginProvider'
 
 export interface AuthenticationConfig {
     storage: Instantiable<AuthenticatableRepository>,
-    sources?: {
-        [key: string]: Instantiable<AuthenticatableRepository>,
+    providers?: {
+        [key: string]: LoginProviderConfig
     },
 }