Allow Vite entry points to be merged (#53233)

* Allow Vite entry points to be merged

* StyleCI appeasement

Author: jackwh

src/Illuminate/Foundation/Vite.php

@@ -175,6 +175,20 @@ public function withEntryPoints($entryPoints)
         return $this;
     }
 
+    /**
+     * Merge additional Vite entry points with the current set.
+     *
+     * @param  array  $entryPoints
+     * @return $this
+     */
+    public function mergeEntryPoints($entryPoints)
+    {
+        return $this->withEntryPoints(array_unique([
+            ...$this->entryPoints,
+            ...$entryPoints,
+        ]));
+    }
+
     /**
      * Set the filename for the manifest file.
      *