CrateHeader: Show "Settings" tab if user is a crate owner

Author: Turbo87

app/components/crate-header.hbs

@@ -33,4 +33,10 @@
   <nav.Tab @link={{link "crate.reverse-dependencies" @crate}} data-test-rev-deps-tab>
     Dependents
   </nav.Tab>
+
+  {{#if this.isOwner}}
+    <nav.Tab @link={{link "crate.owners" @crate}} data-test-settings-tab>
+      Settings
+    </nav.Tab>
+  {{/if}}
 </NavTabs>

app/components/crate-header.js

@@ -1,7 +1,13 @@
+import { computed } from '@ember/object';
 import { inject as service } from '@ember/service';
 import Component from '@glimmer/component';
 
 export default class CrateHeader extends Component {
   @service router;
   @service session;
+
+  @computed('args.crate.owner_user', 'session.currentUser.id')
+  get isOwner() {
+    return this.args.crate.owner_user.findBy('id', this.session.currentUser?.id);
+  }
 }