Feature update - Add Discord option to dashboard

This feature add's the discord chat link if one exists inside the `chat_url`.  I filter and search for a link containing `discord`.  Then if matching, displays the link.

src/views/components/dashboard/DashboardPriceChart2.vue

@@ -176,6 +176,14 @@
         >
           <feather-icon icon="GithubIcon" /> Github
         </b-button>
+        <b-button
+          :href="discord"
+          class="mr-1"
+          variant="outline-secondary"
+          size="sm"
+        >
+          <feather-icon icon="MessageSquareIcon" /> Discord
+        </b-button>
         <b-button
           :href="telegram"
           class="mr-1"
@@ -362,6 +370,13 @@ export default {
       }
       return '#'
     },
+    discord() {
+      const discordLink = this.coinInfo.links.chat_url.filter(x => x.includes('discord'))
+      if (discordLink) {
+        return discordLink ? `${discordLink}` : '#'
+      }
+      return '#'
+    },
     telegram() {
       if (this.coinInfo.links) {
         return this.coinInfo.links.telegram_channel_identifier ? `https://t.me/${this.coinInfo.links.telegram_channel_identifier}` : '#'