Add enhanced announcements notification dot feature

This change adds a new option which consists of the injection of custom
CSS code to enhance the announcements notification dot shown in the
hamburger icon in the Community Console.

Change-Id: I6963017d25ba99f82ccabfde8eae45fa3280c4ec
diff --git a/src/content_scripts/console_inject.js b/src/content_scripts/console_inject.js
index 538e576..67bd409 100644
--- a/src/content_scripts/console_inject.js
+++ b/src/content_scripts/console_inject.js
@@ -397,6 +397,11 @@
         'material-drawer .main-header{background: var(--TWPT-drawer-background, #fff)!important; position: sticky; top: 0; z-index: 1;}');
   }
 
+  if (options.enhancedannouncementsdot) {
+    injectStylesheet(
+        chrome.runtime.getURL('injections/enhanced_announcements_dot.css'));
+  }
+
   if (options.ccforcehidedrawer) {
     var drawer = document.querySelector('material-drawer');
     if (drawer !== null && drawer.classList.contains('mat-drawer-expanded')) {