Add the ability to show icons for the tabs on the entity page (new frontend)

Signed-off-by: Andreas Berger <andreas@berger-ecommerce.com>

plugins/techdocs/report-alpha.api.md

@@ -16,8 +16,10 @@ import { ExtensionInput } from '@backstage/frontend-plugin-api';
 import { IconComponent } from '@backstage/frontend-plugin-api';
 import { IconLinkVerticalProps } from '@backstage/core-components';
 import { JSX as JSX_2 } from 'react';
+import { JSXElementConstructor } from 'react';
 import { OverridableExtensionDefinition } from '@backstage/frontend-plugin-api';
 import { OverridableFrontendPlugin } from '@backstage/frontend-plugin-api';
+import { ReactElement } from 'react';
 import { RouteRef } from '@backstage/core-plugin-api';
 import { RouteRef as RouteRef_2 } from '@backstage/frontend-plugin-api';
 import { SearchResultItemExtensionComponent } from '@backstage/plugin-search-react/alpha';
@@ -126,12 +128,14 @@ const _default: OverridableFrontendPlugin<
         title: string | undefined;
         filter: EntityPredicate | undefined;
         group: string | false | undefined;
+        icon: string | undefined;
       };
       configInput: {
         filter?: EntityPredicate | undefined;
         title?: string | undefined;
         path?: string | undefined;
         group?: string | false | undefined;
+        icon?: string | undefined;
       };
       output:
         | ExtensionDataRef<string, 'core.routing.path', {}>
@@ -164,6 +168,13 @@ const _default: OverridableFrontendPlugin<
             {
               optional: true;
             }
+          >
+        | ExtensionDataRef<
+            string | ReactElement<any, string | JSXElementConstructor<any>>,
+            'catalog.entity-content-icon',
+            {
+              optional: true;
+            }
           >;
       inputs: {
         addons: ExtensionInput<
@@ -202,6 +213,7 @@ const _default: OverridableFrontendPlugin<
         title: string;
         defaultGroup?: [Error: `Use the 'group' param instead`];
         group?: keyof defaultEntityContentGroups | (string & {});
+        icon?: string | ReactElement;
         loader: () => Promise<JSX.Element>;
         routeRef?: RouteRef_2;
         filter?: string | EntityPredicate | ((entity: Entity) => boolean);