chore: added eslint rule for nomad plugin

Signed-off-by: Gaurav Pandey <grvpandey11@gmail.com>

.changeset/blue-bobcats-nail.md

@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-nomad': patch
+---
+
+Added an optional ESLint rule - no-top-level-material-ui-4-imports -in nomad plugin which has an auto fix function to migrate the imports and used it to migrate the Material UI imports for plugins/nomad.

plugins/nomad/.eslintrc.js

@@ -1 +1,5 @@
-module.exports = require('@backstage/cli/config/eslint-factory')(__dirname);
+module.exports = require('@backstage/cli/config/eslint-factory')(__dirname, {
+    rules: {
+      '@backstage/no-top-level-material-ui-4-imports': 'error',
+    },
+  });

plugins/nomad/src/components/EntityNomadJobVersionListCard/EntityNomadJobVersionListCard.tsx

@@ -34,7 +34,7 @@ import {
   isNomadJobIDAvailable,
 } from '../../annotations';
 import OpenInNewIcon from '@material-ui/icons/OpenInNew';
-import { Chip } from '@material-ui/core';
+import Chip from '@material-ui/core/Chip';
 
 type rowType = Version & { nomadAddr: string };