apply core-imports codemod to all packages and plugins

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

plugins/newrelic/src/api/index.ts

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-import { createApiRef, DiscoveryApi } from '@backstage/core';
+import { createApiRef, DiscoveryApi } from '@backstage/core-plugin-api';
 
 export type NewRelicApplication = {
   id: number;

plugins/newrelic/src/components/NewRelicComponent/NewRelicComponent.tsx

@@ -16,6 +16,7 @@
 
 import React from 'react';
 import { Grid } from '@material-ui/core';
+import NewRelicFetchComponent from '../NewRelicFetchComponent';
 import {
   Header,
   Page,
@@ -23,8 +24,7 @@ import {
   ContentHeader,
   HeaderLabel,
   SupportButton,
-} from '@backstage/core';
-import NewRelicFetchComponent from '../NewRelicFetchComponent';
+} from '@backstage/core-components';
 
 const NewRelicComponent = () => (
   <Page themeId="tool">

plugins/newrelic/src/components/NewRelicFetchComponent/NewRelicFetchComponent.tsx

@@ -15,11 +15,13 @@
  */
 
 import React from 'react';
-import { Progress, Table, TableColumn, useApi } from '@backstage/core';
 import Alert from '@material-ui/lab/Alert';
 import { useAsync } from 'react-use';
 import { newRelicApiRef, NewRelicApplications } from '../../api';
 
+import { Progress, Table, TableColumn } from '@backstage/core-components';
+import { useApi } from '@backstage/core-plugin-api';
+
 export const NewRelicAPMTable = ({ applications }: NewRelicApplications) => {
   const columns: TableColumn[] = [
     { title: 'Application', field: 'name' },

plugins/newrelic/src/plugin.ts

@@ -14,14 +14,14 @@
  * limitations under the License.
  */
 
+import { NewRelicClient, newRelicApiRef } from './api';
 import {
   createApiFactory,
   createPlugin,
   createRouteRef,
   discoveryApiRef,
   createRoutableExtension,
-} from '@backstage/core';
-import { NewRelicClient, newRelicApiRef } from './api';
+} from '@backstage/core-plugin-api';
 
 export const rootRouteRef = createRouteRef({
   path: '/newrelic',