apply core-imports codemod to all packages and plugins

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

plugins/techdocs/dev/index.tsx

@@ -14,14 +14,6 @@
  * limitations under the License.
  */
 
-import {
-  configApiRef,
-  discoveryApiRef,
-  Header,
-  identityApiRef,
-  Page,
-  TabbedLayout,
-} from '@backstage/core';
 import { createDevApp } from '@backstage/dev-utils';
 import { NotFoundError } from '@backstage/errors';
 import React from 'react';
@@ -32,6 +24,13 @@ import {
   techdocsStorageApiRef,
 } from '../src';
 
+import {
+  configApiRef,
+  discoveryApiRef,
+  identityApiRef,
+} from '@backstage/core-plugin-api';
+import { Header, Page, TabbedLayout } from '@backstage/core-components';
+
 // used so each route can provide it's own implementation in the constructor of the react component
 let apiHolder: TechDocsStorageApi | undefined = undefined;