style: Add session icon to sessions list

Also, specify active session icon color

ui/core/app/styles/app.scss

@@ -114,3 +114,9 @@
     }
   }
 }
+
+.session-status-active {
+  &.rose-icon {
+    color: var(--success);
+  }
+}

ui/core/app/templates/scopes/scope/projects/project/sessions/index.hbs

@@ -31,6 +31,10 @@
           {{#each @model as |sessionAggregate|}}
             <body.row as |row|>
               <row.headerCell>
+                <Rose::Icon
+                  class={{concat "session-status-" sessionAggregate.session.status}}
+                  @name="app-icons/action-session"
+                  @size="medium" />
                 <Copyable
                   @text={{sessionAggregate.session.id}}
                   @buttonText={{t "actions.copy-to-clipboard"}}