Update grid utility classes with new properties

assets/scss/utils/_grid.scss

@@ -19,10 +19,44 @@ $grid-utilities: (
       "10": repeat(10, minmax(0, 1fr)),
       "11": repeat(11, minmax(0, 1fr)),
       "12": repeat(12, minmax(0, 1fr)),
+      "autofit": repeat(auto-fit, minmax(0, 1fr)),
       "none": none,
     ),
     responsive: true,
   ),
+  "grid-auto-flow": (
+    property: grid-auto-flow,
+    class: grid-flow,
+    values: (
+      "col": column,
+      "col-dense": column dense,
+      "row": row,
+      "row-dense": row dense,
+    ),
+    responsive: true,
+  ),
+  "grid-auto-columns": (
+    property: grid-auto-columns,
+    class: auto-cols,
+    values: (
+      "auto": auto,
+      "min": min-content,
+      "max": max-content,
+      "fr": minmax(0, 1fr),
+    ),
+    responsive: true,
+  ),
+  "grid-auto-row": (
+    property: grid-auto-row,
+    class: auto-rows,
+    values: (
+      "auto": auto,
+      "min": min-content,
+      "max": max-content,
+      "fr": minmax(0, 1fr),
+    ),
+    responsive: true,
+  ),
 );
 
 @include generate-utilities($grid-utilities);