convert es-footer to a glimmer component

Author: mansona

addon/components/es-footer-contributions.js

@@ -0,0 +1,4 @@
+import Component from '@glimmer/component';
+
+export default class EsFooterContributionsComponent extends Component {
+}

addon/components/es-footer-info.js

@@ -0,0 +1,4 @@
+import Component from '@glimmer/component';
+
+export default class EsFooterInfoComponent extends Component {
+}

addon/components/es-footer-statement.js

@@ -0,0 +1,9 @@
+import Component from '@glimmer/component';
+
+export default class EsFooterStatementComponent extends Component {
+  constructor() {
+    super(...arguments)
+
+    this.currentYear = new Date().getUTCFullYear();
+  }
+}

addon/components/es-footer.js

@@ -1,4 +1,4 @@
-import Component from 'sparkles-component';
+import Component from '@glimmer/component';
 
 import {
   socialLinks,
@@ -7,7 +7,7 @@ import {
   tagline
 } from '../constants/es-footer';
 
-export default class EsPageHeader extends Component {
+export default class EsFooterComponent extends Component {
   socialLinks = socialLinks
 
   tagline = tagline