[FIX] web, project: use the ES6 import

Remove the CommonJS require from the odoo-modules files and replace it
with the new ES6 imports.

Co-authored-by: Samuel Degueldre <sad@odoo.com>

addons/project/static/src/js/burndown_chart/renderer.js

@@ -1,9 +1,6 @@
 /** @odoo-module alias=project.BurndownChartRenderer **/
 import * as GraphRenderer from 'web/static/src/js/views/graph/graph_renderer';
-
-const {
-    hexToRGBA,
-} = require("web/static/src/js/views/graph/graph_utils");
+import { hexToRGBA } from "web/static/src/js/views/graph/graph_utils";
 
 export class BurndownChartRenderer extends GraphRenderer {
     /**

addons/web/static/src/js/views/abstract_renderer.js

@@ -6,7 +6,7 @@
  *
  */
 
-var mvc = require('web.mvc');
+import * as mvc from 'web.mvc';
 
 // Renderers may display sample data when there is no real data to display. In
 // this case the data is displayed with opacity and can't be clicked. Moreover,

addons/web/static/src/js/views/pivot/pivot_view.js

@@ -18,7 +18,7 @@
     const _t = core._t;
     const _lt = core._lt;
 
-    const searchUtils = require('web.searchUtils');
+    import * as searchUtils from 'web.searchUtils';
     const GROUPABLE_TYPES = searchUtils.GROUPABLE_TYPES;
 
     const PivotView = AbstractView.extend({

addons/web/static/src/js/views/view_utils.js

@@ -1,8 +1,8 @@
 /** @odoo-module alias=web.viewUtils **/
 
 
-var dom = require('web.dom');
-var utils = require('web.utils');
+import * as dom from 'web.dom';
+import * as utils from 'web.utils';
 
 var viewUtils = {
     /**