Implemented side tree to devices and rountines screen

lib/pages/routines/bloc/functions_bloc/functions_bloc_state.dart

@@ -0,0 +1,29 @@
+part of 'functions_bloc_bloc.dart';
+
+class FunctionBlocState extends Equatable {
+  final List<DeviceFunctionData> addedFunctions;
+  final String? selectedFunction;
+  final String? selectedOperationName;
+  const FunctionBlocState({
+    this.addedFunctions = const [],
+    this.selectedFunction,
+    this.selectedOperationName,
+  });
+
+  FunctionBlocState copyWith({
+    List<DeviceFunctionData>? addedFunctions,
+    String? selectedFunction,
+    String? selectedOperationName,
+  }) {
+    return FunctionBlocState(
+      addedFunctions: addedFunctions ?? this.addedFunctions,
+      selectedFunction: selectedFunction ?? this.selectedFunction,
+      selectedOperationName:
+          selectedOperationName ?? this.selectedOperationName,
+    );
+  }
+
+  @override
+  List<Object?> get props =>
+      [addedFunctions, selectedFunction, selectedOperationName];
+}