fix(ng-lib): correct ModuleWithProvider (#75)

update ng-Lib to be a proper moduleWithProviders

Author: LayZeeDK

projects/scullyio/ng-lib/src/lib/components.module.ts

@@ -1,16 +1,16 @@
 import {HttpClient} from '@angular/common/http';
-import {NgModule} from '@angular/core';
+import {ModuleWithProviders, NgModule} from '@angular/core';
 import {ScullyContentComponent} from './scully-content/scully-content.component';
 
 @NgModule({
   declarations: [ScullyContentComponent],
   exports: [ScullyContentComponent],
 })
 export class ComponentsModule {
-  static forRoot() {
+  static forRoot(): ModuleWithProviders<ComponentsModule> {
     return {
-      NgModule: ComponentsModule,
-      deps: [HttpClient],
+      ngModule: ComponentsModule,
+      providers: [HttpClient],
     };
   }
 }