The editor selector is the information for locating a block, which can automatically focus on a certain content when a user opens a document.
```
export type EditorSelector = {
blockIds?: string[];
elementIds?: string[];
};
```
The selector can be set from multiple places, such as passing it in the center peek parameter, or passing it in the query part of the URL.
This pr decoupled the selector from the query string and now available at `editorService.editor.selector$`
EYHN