Create options for performing global search that includes rendered and outputted notebook content

[andreamah]

Continuation of #148068

With the notebook editors binded to the search model, we can explore adding filter options for rendered markdown and output like there is in the notebook find widget.

I tentatively think that it would be through a filter icon that only appears when notebooks are binded, but there might be a better way of showing this.

[andreamah]

This issue will also cover searching dirty changes in the notebook editor, for read-only and editable content.

[andreamah]

will likely go with this type of format for switching between match types (cell input, cell output, rendered/output markdown)