Show first lines of file content in the file browser

@rmeier This request is one of specific cases to be solved by:

There is also more general/customizable:

@Rishi I do not think it is good idea to start wildly renaming files just because Obsidian can do it.
Relevant discussion: How to efficiently link notes with time-based filenames?


Related request by visualization method, with different use case: Document Spanning