Restore pointerMove in condition.js and example.

Wrongly removed on previous commit as pointed by @ahocevar.

examples/select-features.js

@@ -1,6 +1,6 @@
 import Map from '../src/ol/Map.js';
 import View from '../src/ol/View.js';
-import {click, altKeyOnly} from '../src/ol/events/condition.js';
+import {click, pointerMove, altKeyOnly} from '../src/ol/events/condition.js';
 import GeoJSON from '../src/ol/format/GeoJSON.js';
 import Select from '../src/ol/interaction/Select.js';
 import {Tile as TileLayer, Vector as VectorLayer} from '../src/ol/layer.js';
@@ -39,9 +39,7 @@ const selectClick = new Select({
 
 // select interaction working on "pointermove"
 const selectPointerMove = new Select({
-  condition: function(mapBrowserEvent) {
+  condition: pointerMove
-    return mapBrowserEvent.type == 'pointermove';
-  }
 });
 
 const selectAltClick = new Select({

src/ol/events/condition.js

@@ -110,6 +110,19 @@ export const mouseActionButton = function(mapBrowserEvent) {
 export const never = FALSE;
 
 
+/**
+ * Return `true` if the browser event is a `pointermove` event, `false`
+ * otherwise.
+ *
+ * @param {import("../MapBrowserEvent.js").default} mapBrowserEvent Map browser event.
+ * @return {boolean} True if the browser event is a `pointermove` event.
+ * @api
+ */
+export const pointerMove = function(mapBrowserEvent) {
+  return mapBrowserEvent.type == 'pointermove';
+};
+
+
 /**
  * Return `true` if the event is a map `singleclick` event, `false` otherwise.
  *