feat: add product hunt banner (#2003)

docs/app/pages/home/banner/banner.component.scss

@@ -0,0 +1,82 @@
+/**
+ * @license
+ * Copyright Akveo. All Rights Reserved.
+ * Licensed under the MIT License. See License.txt in the project root for license information.
+ */
+
+@import '../../../@theme/styles/themes';
+
+:host {
+  position: fixed;
+  @include nb-ltr(right, 10px);
+  @include nb-rtl(left, 10px);
+  top: 80px;
+  border-radius: 5px;
+  background-color: #dc5425;
+  box-shadow: 0 2px 4px 0 rgba(189, 93, 60, 0.54);
+  z-index: 99999999;
+
+  .heading-with-icon {
+    display: flex;
+    align-items: center;
+  }
+
+  .icon {
+    height: auto;
+    width: 77px;
+    margin: 0 26px;
+  }
+
+  .banner-heading {
+    font-size: 14px;
+    line-height: 20px;
+    font-weight: 700;
+    margin: 0;
+    color: #ffffff;
+  }
+
+  .banner-content {
+    padding-top: 36px;
+    padding-bottom: 36px;
+  }
+
+  .close-button {
+    background: none;
+    border: none;
+    cursor: pointer;
+    margin-bottom: auto;
+    padding: 10px;
+    color: #ffffff;
+  }
+
+  .nb-close {
+    font-size: 24px;
+    font-weight: 600;
+  }
+
+  .cta {
+    margin: 8px 0 0;
+    font-size: 14px;
+    color: #ffffff;
+  }
+
+  .cta-link {
+    font-size: 10px;
+    border-radius: 2px;
+    display: inline-block;
+    padding: 4px 16px;
+    margin: 0 10px;
+    text-transform: uppercase;
+    font-weight: 700;
+    background: #ffffff;
+    color: #000000;
+  }
+
+  @media screen and (max-width: 991px) {
+    top: 20px;
+  }
+
+  @media screen and (max-width: 767px) {
+    display: none;
+  }
+}

docs/app/pages/home/banner/banner.component.ts

@@ -0,0 +1,63 @@
+/**
+ * @license
+ * Copyright Akveo. All Rights Reserved.
+ * Licensed under the MIT License. See License.txt in the project root for license information.
+ */
+
+import { Component, HostBinding, Inject, OnInit } from '@angular/core';
+import { NB_WINDOW } from '@nebular/theme';
+
+const HIDE_BANNER_KEY = 'HIDE_PRODUCT_HUNT_BANNER';
+
+@Component({
+  selector: 'ngx-release-banner',
+  template: `
+    <div class="heading-with-icon">
+      <img class="icon" src="/assets/img/product-hunt-cat.png" alt="Product Hunt">
+      <div class="banner-content">
+        <h2 class="banner-heading">ngx-admin is on Product Hunt today!</h2>
+        <p class="cta">Please
+          <a class="cta-link"
+             href="https://www.producthunt.com/posts/ngx-admin"
+             target="_blank">
+            share
+          </a>
+          your feedback :)
+        </p>
+      </div>
+      <button class="close-button" aria-label="close" (click)="closeBanner()">
+        <span class="nb-close"></span>
+      </button>
+    </div>
+  `,
+  styleUrls: ['./banner.component.scss'],
+})
+export class BannerComponent implements OnInit {
+
+  storage: Storage;
+
+  @HostBinding('attr.hidden')
+  isHidden: true | null = null;
+
+  @HostBinding('attr.dir')
+  dir = 'ltr';
+
+  constructor(
+    @Inject(NB_WINDOW) private window,
+  ) {}
+
+  ngOnInit() {
+    this.storage = this.window.localStorage;
+
+    this.isHidden = this.storage && this.storage.getItem(HIDE_BANNER_KEY)
+      ? true
+      : null;
+  }
+
+  closeBanner() {
+    if (this.storage) {
+      this.storage.setItem(HIDE_BANNER_KEY, 'true');
+    }
+    this.isHidden = true;
+  }
+}