Add support for adding banner to site header

src/invidious/helpers/helpers.cr

@@ -125,6 +125,7 @@ user: String,
     dmca_content:      {type: Array(String), default: [] of String}, # For compliance with DMCA, disables download widget using list of video IDs
     check_tables:      {type: Bool, default: false},                 # Check table integrity, automatically try to add any missing columns, create tables, etc.
     cache_annotations: {type: Bool, default: false},                 # Cache annotations requested from IA, will not cache empty annotations or annotations that only contain cards
+    banner:            {type: String?, default: nil},                # Optional banner to be displayed along top of page for announcements, etc.
   })
 end
 

src/invidious/views/template.ecr

@@ -101,6 +101,11 @@
                 <% end %>
                 </div>
             </div>
+            <% if CONFIG.banner %>
+            <div class="h-box">
+                <h3><%= CONFIG.banner %></h3>
+            <% end %>
+            </div>
             <%= content %>
             <div class="footer">
                 <div class="pure-g">