fix(banner): add missing SCSS and register component in SharedModule

Add kubecon-banner.component.scss with responsive banner styles.
Register KubeconBannerComponent in SharedModule declarations and exports.

Resolves: linuxfoundation/easycla#4888
Assisted by [Cursor](https://cursor.com/)

Signed-off-by: ahmedomosanya <[email protected]>

Author: ahmedomosanya

src/app/shared/components/kubecon-banner/kubecon-banner.component.scss

@@ -0,0 +1,29 @@
+// Copyright The Linux Foundation and each contributor to CommunityBridge.
+// SPDX-License-Identifier: MIT
+// Assisted with Cursor, assisted with Claude AI
+
+.kubecon-banner {
+  display: block;
+  background-color: rgb(0, 148, 255);
+  color: white;
+  text-align: center;
+  height: 3.5rem;
+  font-size: 0.875rem;
+  line-height: 1.75rem;
+  margin-top: 60px;
+
+  a {
+    color: white;
+    text-decoration: underline;
+    white-space: nowrap;
+
+    &:hover {
+      text-decoration: none;
+    }
+  }
+
+  // Responsive styles
+  @media (min-width: 640px) {
+    height: 1.75rem;
+  }
+}

src/app/shared/shared.module.ts

@@ -19,6 +19,7 @@ import { FooterComponent } from './components/footer/footer.component';
 import { ConsentComponent } from './components/consent/consent.component';
 import { CommonModule } from '@angular/common';
 import { TrackEventDirective } from './directives/track-event.directive';
+import { KubeconBannerComponent } from './components/kubecon-banner/kubecon-banner.component';
 
 @NgModule({
     declarations: [
@@ -33,7 +34,8 @@ import { TrackEventDirective } from './directives/track-event.directive';
         CheckboxComponent,
         FooterComponent,
         ConsentComponent,
-        TrackEventDirective
+        TrackEventDirective,
+        KubeconBannerComponent
     ],
     imports: [
         CommonModule
@@ -50,7 +52,8 @@ import { TrackEventDirective } from './directives/track-event.directive';
         CheckboxComponent,
         FooterComponent,
         ConsentComponent,
-        TrackEventDirective
+        TrackEventDirective,
+        KubeconBannerComponent
     ],
     providers: [StorageService, AuthService, LfxHeaderService, InterceptorService]
 })