Lodash upgrade and cleanup (#2990)

* Upgrades lodash
* Replaces some usage of lodash with native functions.
* Adds linting to catch cases where native functions could be used instead of lodash functions
* Renamed testTools to testUtils

Co-authored-by: Joshi <simplyrender@gmail.com>
Co-authored-by: David Tsay <david.e.tsay@nasa.gov>
Co-authored-by: David Tsay <3614296+davetsay@users.noreply.github.com>
Co-authored-by: Andrew Henry <akhenry@gmail.com>

src/plugins/displayLayout/components/DisplayLayout.vue

@@ -68,7 +68,6 @@
 
 <script>
 import uuid from 'uuid';
-
 import SubobjectView from './SubobjectView.vue'
 import TelemetryView from './TelemetryView.vue'
 import BoxView from './BoxView.vue'
@@ -76,6 +75,7 @@ import TextView from './TextView.vue'
 import LineView from './LineView.vue'
 import ImageView from './ImageView.vue'
 import EditMarquee from './EditMarquee.vue'
+import _ from 'lodash'
 
 const ITEM_TYPE_VIEW_MAP = {
     'subobject-view': SubobjectView,
@@ -512,7 +512,7 @@ export default {
             }
         },
         updateTelemetryFormat(item, format) {
-            let index = _.findIndex(this.layoutItems, item);
+            let index = this.layoutItems.findIndex(item);
             item.format = format;
             this.mutate(`configuration.items[${index}]`, item);
         }

src/plugins/displayLayout/components/LayoutFrame.vue

@@ -40,6 +40,7 @@
 
 <script>
 import LayoutDrag from './../LayoutDrag'
+import _ from 'lodash'
 
 export default {
     inject: ['openmct'],

src/plugins/displayLayout/components/LineView.vue

@@ -62,6 +62,7 @@
 <script>
 
 import conditionalStylesMixin from "../mixins/objectStyles-mixin";
+import _ from 'lodash';
 
 const START_HANDLE_QUADRANTS = {
     1: 'c-frame-edit__handle--sw',