Show breadcrumbs in excerpts list

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Describe the feature

In the excerpts list (i.e. LSP references, search results, diagnostics, etc) it'd be _really_ cool if zed could show breadcrumbs of each match.

For example, when I'm looking for references of a type, it'd be neat if I could see the module, class and function the excerpt is from, rather than just the file. I'd think that this info could neatly be included at the top of each excerpt in a small fontsize, such as to not be too overwhelming UI wise.

If applicable, add mockups / screenshots to help present your vision of the feature


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