style: add clear icon to channels search field

this commit closes #75

src/app/player/components/channel-list-container/channel-list-container.component.html

@@ -4,6 +4,7 @@
             <mat-list-item>
                 <input
                     class="full-width search-bar"
+                    type="search"
                     #search
                     placeholder="{{ 'CHANNELS.SEARCH_CHANNEL' | translate }} ({{
                         _channelList?.length

src/app/player/components/channel-list-container/channel-list-container.component.scss

@@ -62,3 +62,14 @@
     font-size: 0.9em;
     width: 290px;
 }
+
+[type='search']::-webkit-search-cancel-button {
+    -webkit-appearance: none;
+    cursor: pointer;
+    appearance: none;
+    height: 10px;
+    width: 10px;
+    background-image: url(data:image/svg+xml;base64,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);
+    background-size: 10px 10px;
+    color: #fff;
+}