feat: manually mirror opencoze's code from bytedance

Change-Id: I09a73aadda978ad9511264a756b2ce51f5761adf

frontend/packages/workflow/playground/src/ui-components/add-operation/index.module.less

@@ -0,0 +1,19 @@
+.container {
+  .icon {
+    color: #4d53e8;
+
+    &>svg {
+      color: #4d53e8;
+    }
+  }
+}
+
+.disabled {
+  .icon {
+    color: var(--light-usage-disabled-color-disabled-text, rgb(28 31 35 / 35%));
+
+    &>svg {
+      color: var(--light-usage-disabled-color-disabled-text, rgb(28 31 35 / 35%));
+    }
+  }
+}

frontend/packages/workflow/playground/src/ui-components/add-operation/index.tsx

@@ -0,0 +1,67 @@
+/*
+ * Copyright 2025 coze-dev Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+ 
+import React from 'react';
+
+import classNames from 'classnames';
+import { IconCozAddNode } from '@coze-arch/coze-design/icons';
+import { IconButton, type ButtonProps } from '@coze-arch/coze-design';
+import { IconAdd } from '@coze-arch/bot-icons';
+
+import styles from './index.module.less';
+
+type AddOperationProps = React.PropsWithChildren<{
+  readonly?: boolean;
+  onClick: React.MouseEventHandler<HTMLButtonElement>;
+  className?: string;
+  style?: React.CSSProperties;
+  disabled?: boolean;
+  subitem?: boolean;
+  size?: ButtonProps['size'];
+  color?: ButtonProps['color'];
+}>;
+
+export default function AddOperation({
+  readonly,
+  onClick,
+  className,
+  style,
+  disabled,
+  subitem = false,
+  size,
+  color,
+  ...restProps
+}: AddOperationProps) {
+  if (readonly) {
+    return null;
+  }
+  return (
+    <IconButton
+      data-testid={restProps['data-testid']}
+      onClick={onClick}
+      className={classNames(
+        styles.container,
+        disabled ? styles.disabled : null,
+        className,
+      )}
+      style={style}
+      icon={subitem ? <IconCozAddNode /> : <IconAdd className={styles.icon} />}
+      disabled={disabled}
+      size={size}
+      color={color}
+    />
+  );
+}