feat: adding grouping to selections

fire_atlas_editor/lib/screens/editor_screen/widgets/edit_selection_folder_modal.dart

@@ -0,0 +1,76 @@
+import 'package:fire_atlas_editor/store/actions/atlas_actions.dart';
+import 'package:fire_atlas_editor/store/actions/editor_actions.dart';
+import 'package:fire_atlas_editor/store/store.dart';
+import 'package:fire_atlas_editor/widgets/button.dart';
+import 'package:fire_atlas_editor/widgets/text.dart';
+import 'package:flutter/material.dart';
+import 'package:slices/slices.dart';
+
+class EditSelectionFolderModal extends StatefulWidget {
+  const EditSelectionFolderModal({
+    required this.selectionId,
+    this.folderId,
+    super.key,
+  });
+
+  final String selectionId;
+  final String? folderId;
+
+  @override
+  State<EditSelectionFolderModal> createState() =>
+      _EditSelectionFolderModalState();
+}
+
+class _EditSelectionFolderModalState extends State<EditSelectionFolderModal> {
+  late final _groupTextController = TextEditingController()
+    ..value = TextEditingValue(text: widget.folderId ?? '');
+
+  @override
+  Widget build(BuildContext context) {
+    final store = SlicesProvider.of<FireAtlasState>(context);
+
+    return Padding(
+      padding: const EdgeInsets.all(16),
+      child: Column(
+        children: [
+          const FSubtitleTitle(title: 'Move to folder'),
+          const SizedBox(height: 8),
+          TextFormField(
+            controller: _groupTextController,
+            decoration: const InputDecoration(
+              labelText: 'Folder name (leave empty to remove from folder)',
+            ),
+          ),
+          const SizedBox(height: 8),
+          Row(
+            mainAxisAlignment: MainAxisAlignment.center,
+            children: [
+              FButton(
+                label: 'Cancel',
+                onSelect: () {
+                  store.dispatch(CloseEditorModal());
+                },
+              ),
+              const SizedBox(width: 5),
+              FButton(
+                selected: true,
+                label: 'Ok',
+                onSelect: () {
+                  store.dispatch(
+                    UpdateSelectionGroup(
+                      selectionId: widget.selectionId,
+                      group: _groupTextController.text.isEmpty
+                          ? null
+                          : _groupTextController.text,
+                    ),
+                  );
+                  store.dispatch(CloseEditorModal());
+                },
+              ),
+            ],
+          ),
+        ],
+      ),
+    );
+  }
+}