feat(demo): add landing page with docs (#1951)

docs/app/@theme/theme.module.ts

@@ -0,0 +1,113 @@
+/**
+ * @license
+ * Copyright Akveo. All Rights Reserved.
+ * Licensed under the MIT License. See License.txt in the project root for license information.
+ */
+
+import { RouterModule } from '@angular/router';
+import { ModuleWithProviders, NgModule } from '@angular/core';
+import { CommonModule } from '@angular/common';
+import { FormsModule, ReactiveFormsModule } from '@angular/forms';
+import { LazyLoadImageModule } from 'ng-lazyload-image';
+
+// components
+import {
+  NgxLandingFooterComponent,
+  NgxSectionTitleComponent,
+  NgxFragmentTargetDirective,
+  NgxPageTocComponent,
+  NgxPageTabsComponent,
+  NgxLandingHeaderComponent,
+  NgxDocsFooterComponent,
+} from './components';
+// components
+
+// services
+import { ngxLandingServices } from './services';
+// services
+
+// pipes
+import { EvaIconsPipe } from './pipes/eva-icons.pipe';
+// pipes
+
+import {
+  NbLayoutModule,
+  NbThemeModule,
+  NbMenuModule,
+  NbCheckboxModule,
+  NbCardModule,
+  NbSidebarModule,
+  NbTabsetModule,
+} from '@nebular/theme';
+
+const BASE_MODULES = [
+  CommonModule,
+  FormsModule,
+  ReactiveFormsModule,
+  LazyLoadImageModule,
+];
+
+const NB_MODULES = [
+  NbLayoutModule,
+  NbCheckboxModule,
+  NbMenuModule,
+  NbCardModule,
+  NbSidebarModule,
+  NbTabsetModule,
+];
+
+const COMPONENTS = [
+  NgxLandingFooterComponent,
+  NgxSectionTitleComponent,
+  NgxFragmentTargetDirective,
+  NgxPageTocComponent,
+  NgxPageTabsComponent,
+  NgxLandingHeaderComponent,
+  NgxDocsFooterComponent,
+];
+
+const PIPES = [
+  EvaIconsPipe,
+];
+
+@NgModule({
+  imports: [
+    RouterModule,
+
+    ...BASE_MODULES,
+
+    ...NB_MODULES,
+  ],
+  declarations: [
+    ...COMPONENTS,
+
+    ...PIPES,
+  ],
+  exports: [
+    RouterModule,
+
+    ...BASE_MODULES,
+
+    ...NB_MODULES,
+
+    ...COMPONENTS,
+
+    ...PIPES,
+  ],
+  entryComponents: [
+  ],
+})
+export class NgxLandingThemeModule {
+  static forRoot(): ModuleWithProviders {
+    return <ModuleWithProviders>{
+      ngModule: NgxLandingThemeModule,
+      providers: [
+        ...NbThemeModule.forRoot({ name: 'ngx-landing' }).providers,
+        ...NbMenuModule.forRoot().providers,
+        ...NbSidebarModule.forRoot().providers,
+
+        ...ngxLandingServices,
+      ],
+    };
+  }
+}