ESLint: Add rule to sort imports alphabetically

The `import/order` rule isn't enough to sort import within a single import group alphabetically.

This adds `sort-imports` rule that handles the sorting within groups.

src/Components/CreateImageWizard/steps/TargetEnvironment/Azure/AzureSourcesSelect.tsx

@@ -1,18 +1,18 @@
-import React, { useState, useEffect } from 'react';
+import React, { useEffect, useState } from 'react';
 
 import {
   Alert,
   Button,
+  FormGroup,
   MenuToggle,
   MenuToggleElement,
-  TextInputGroup,
-  TextInputGroupMain,
-  TextInputGroupUtilities,
-  FormGroup,
-  Spinner,
   Select,
   SelectList,
   SelectOption,
+  Spinner,
+  TextInputGroup,
+  TextInputGroupMain,
+  TextInputGroupUtilities,
 } from '@patternfly/react-core';
 import { TimesIcon } from '@patternfly/react-icons';