[DEV] Added Custom Chip Selector

lib/src/Selectors/selectors.astromic.dart

@@ -37,6 +37,7 @@ class AstromicSelectors {
     void Function(List<T> selectedItems)? onChanged,
     //
     AstromicSelectorConfiguration? configuration,
+    bool isCustom = false,
     //
     double? itemSpacing = 4,
     double? runSpacing = 8,
@@ -49,18 +50,36 @@ class AstromicSelectors {
     required List<(T item, bool isEnabled)> items,
     required Widget Function(T item, {bool isSelected, VoidCallback? onTap, VoidCallback? onClearTapped}) itemBuilder,
     required Widget Function(T item) disabledItemBuilder,
-  }) =>
-      AstromicChipSelector(
-        initialSelectedValues: initialSelectedValues,
-        onChanged: onChanged,
-        //
-        configuration: configuration,
-        //
-        itemSpacing: itemSpacing,
-        runSpacing: runSpacing,
-        //
-        items: items,
-        itemBuilder: itemBuilder,
-        disabledItemBuilder: disabledItemBuilder,
-      );
+    Widget Function(List<Widget> items)? groupBuilder,
+  }) {
+    assert(
+      (!isCustom || groupBuilder != null),
+      "You have to provide the group builder in a custom constructor.",
+    );
+    return isCustom
+        ? AstromicChipSelector.custom(
+            initialSelectedValues: initialSelectedValues,
+            onChanged: onChanged,
+            //
+            configuration: configuration,
+            //
+            items: items,
+            itemBuilder: itemBuilder,
+            disabledItemBuilder: disabledItemBuilder,
+            groupBuilder: groupBuilder!,
+          )
+        : AstromicChipSelector(
+            initialSelectedValues: initialSelectedValues,
+            onChanged: onChanged,
+            //
+            configuration: configuration,
+            //
+            itemSpacing: itemSpacing,
+            runSpacing: runSpacing,
+            //
+            items: items,
+            itemBuilder: itemBuilder,
+            disabledItemBuilder: disabledItemBuilder,
+          );
+  }
 }