DcatAdmin 配置富文本，TinyEditor 上传文件，上传视频 后端
Editor::resolving(function (Editor $editor) {
$editor->options(
[
'file_picker_callback' => \Dcat\Admin\Support\JavaScript::make(<<<JS
...
DcatAdmin 配置富文本，让工具条固定到顶部 后端
在项目app/Admin/bootstrap.php中进行设置：
Editor::resolving(function (Editor $editor) {
$editor->options(
[
'toolbar_sticky' => true,
'toolbar_stic...