[Improvement] Feature/input quantity value cell editor (#520)

* Add logic to allow editing in grid for input quantity values.

* Use let.

---------

Co-authored-by: luke.macausland <luke.macausland@torqit.ca>

public/js/pimcore/object/tags/inputQuantityValue.js

@@ -135,6 +135,7 @@ pimcore.object.tags.inputQuantityValue = Class.create(pimcore.object.tags.abstra
         }.bind(this, field.key);
 
         return {
+            getEditor: this.getWindowCellEditor.bind(this, field),
             text: t(field.label),
             sortable:true,
             dataIndex:field.key,
@@ -159,6 +160,12 @@ pimcore.object.tags.inputQuantityValue = Class.create(pimcore.object.tags.abstra
         };
     },
 
+    getCellEditValue: function () {
+        let value = this.getValue();
+        value["unitAbbr"] = this.unitField.getRawValue();
+        return value;
+      },
+
     getName: function () {
         return this.fieldConfig.name;
     }