Allow custom inline index configuration

[codingseb]

First thanks for this amazing obsidian plugin.

It would be great if we could configure some custom values for a specific index (for Content Rendering Settings).
We could use some properties directly in the code block to override the default Settings.

Something like :

```folder-index-content
autoIncludePreview: true
buildIndexFilesRecursively: false
disableHeadlines: true
...
```

Thanks to consider implementing this.